“Breakfast of champions.” What’s the difference between eating less
food and eating no food? Well, Let’s look at two different situations. …In 1944, a study called the Minnesota Starvation
Experiment was conducted and was designed to understand the effects of caloric restriction
on the body in order to gain some knowledge that would help people starving in the aftermath
of World War 2. Thirty-six healthy men with an average height
of 178cm (about five foot ten) and average weight of 69.3 kilograms (or 153 pounds) were
selected. For three months, they ate a diet of 3200
calories per day. Then, for six months they ate only 1570 calories. However, caloric intake was adjusted to attempt
to have the men lose 1.1 kilograms per week, meaning some men got less than 1000 calories
per day. The foods given were high in carbohydrates-
things like potatoes, turnips, bread and macaroni. Meat and dairy products were rarely given. During the six months, the men experienced
profound physical and psychological changes. Everyone complained that they were too cold. One subject talked about having to wear a
sweater in July on a sunny day. The subjects’ body temperature dropped to
an average of 95.8 degrees Fahrenheit (35.4 degrees celsius). Physical endurance dropped by half, and strength
showed a 21 percent decrease. The men experienced a complete lack of interest
in everything except for food, which they were obsessed with. They were plagued with constant and intense
hunger. There were several cases of neurotic behavior
like hoarding cookbooks and utensils. Two participants had to be cut from the experiment
because they admitted to stealing and eating several raw turnips and taking scraps of food
from garbage cans. At first, the participants were allowed to
chew gum, until some of the men began chewing up to 40 packages a day. Now compare all this to the case of Angus
Barbieri, a Scottish man who in 1965 fasted for over 380 days straight. That is he took in no food whatsoever -nothing
but water, black coffee and straight tea for just over a year. He lost 276 pounds, going from from 456 pounds
to 180. A case report published by the Dundee University
Department of Medicine in 1973 said “…the patient remained symptom-free, felt well and
walked about normally,” and “Prolonged fasting in this patient had no ill-effects.” There were no complaints of mind numbing hunger
and he kept the weight off- for several years his weight stayed around 196 pounds. This of course is not a perfect comparison,
with the case of Angus, there’s only one subject and his starting weight was drastically
higher compared to those in the Minnesota Experiment. However, it does illustrate some very interesting
points about just how different of a physiological response you get from fasting (that is, eating
nothing) compared to eating less, or caloric restriction. Dr. Jason Fung, a Toronto physician specializing
in kidney disease, and author of the Obesity Code, says that compared to fasting, Caloric
Reduction will result in: less weight loss, more lean mass loss (i.e. more muscle loss),
and more hunger. Let’s start by talking about hunger. In Upton Sinclair’s 1911 book “The Fasting
Cure,” he writes about fasting as a means to improve health. In describing his first couple attempts at
fasting he writes “I was very hungry for the first day-the unwholesome, ravening sort
of hunger that all dyspeptics know. I had a little hunger the second morning,
and thereafter, to my great astonishment, no hunger whatever-no more interest in food
than if I had ever known the taste of it.” Sinclair recommends to do quite long fasts
– around 12 days or so. In a section addressing concerns about fasting
he writes “Several people have asked me if it would not be better for them to eat
very lightly instead of fasting, or to content themselves with fasts of two or three days
at frequent intervals. My reply to that is that I find it very much
harder to do that, because all the trouble in the fast occurs during the first two or
three days. It is during those days that you are hungry.” Then he says: “…perhaps, it might be a
good thing to eat very lightly of fruit, instead of taking an absolute fast-the only trouble
is that I cannot do it. Again and again I have tried, but always with
the same result: the light meals are just enough to keep me ravenously hungry…” In the book he says you will know when you
should finish fasting, because your hunger will “return.” He quotes a letter he received from a 72 year
old man saying “After fasting twenty-eight days I began to be hungry, and broke my fast
with a little grape juice, followed the next day with tomatoes, and later with vegetable
soup. ” He quotes several other letters he received
from readers and this disappearance and reappearance of hunger is a common theme. Everyone who wrote to him fasted for at least
10 days, saying they only broke their fast when hunger “returned.” This phenomenon runs contrary to the idea
one would get hungrier and hungrier as long as they don’t eat. However, most people have experienced for
themselves that this is not the case. Some will find that they are not hungry at
all in the morning or at least they are not as hungry as they are for lunch or dinner. But unless you are eating in your sleep, the
morning is when you have gone the longest without food. Some of this can be explained by the hormone
Ghrelin. Ghrelin, known as the “hunger hormone”
has been found to increase appetite and weight gain. A study at the Medical University of Vienna
looked at patients participating in a 33 hour fast. Their ghrelin levels were checked every 20
minutes. Here’s how the levels changed over time. What’s interesting is ghrelin is lowest
at 9:00AM, which is when they have gone the longest without eating. And, Ghrelin comes in waves and overall doesn’t
rise during the period the subjects were fasting. Then, As you can see, ghrelin rises in sync
with normal lunch and dinner times, as if the body had learned to expect food at that
time. However, that ghrelin rise spontaneously decreases
after 2 hours without food. I’ve experienced this kind of spontaneous
decrease in hunger myself many times when I was working as a consultant. Lunch time would come and I would be hungry,
but I was too busy to eat so I just kept working. Pretty quickly I forgot about eating and wasn’t
particularly hungry until dinner time. This is very helpful to keep in mind if you’re
doing a long fast or even if you’re starting intermittent fasting – you’re going to get
annoying waves of hunger, especially around the times that you usually eat. But, it won’t get worse, the hunger will
simply go away if you are patient. Another study concerning ghrelin was done
at Aarhus University Hospital in Denmark and it shows what happens if you do a longer fast. They looked at the ghrelin levels of 33 subjects
who fasted for 84 hours. So, did they get increasingly hungrier throughout
the fasting period? Well, No. Their ghrelin followed similar rhythms each
day but actually decreased the longer they fasted. Going longer without food actually made them
less hungry. This gives credence to what Upton Sinclair
and his readers said about hunger disappearing after the first 3 days of fasting. I’ve done a couple 5 and 6 day fasts in
the past myself and this was indeed the case. Actually, I did a 4 day fast last week and
again the 4th day was when I had the least hunger. Another thing that may be contributing to
this phenomenon is that you are entering ketosis. Ketosis is a physiological state where your
metabolism switches to using primarily fat for energy. For this reason ketosis is popular as a weight
loss method, but it has many other benefits including better physical and mental efficiency. Ketosis occurs when you restrict carbohydrates
down to 50 grams or less and you don’t eat too much protein. Everyone’s body is a bit different so you
might have to eat even less carbohydrate or may have room for more, but the recommended
ratio of a ketogenic diet is to get 5% of your calories from carbs, 25% from protein
and 75% from good fat. A simpler way to enter ketosis is just don’t
eat anything for a long enough time. This is one of the major points in the difference
between fasting and caloric restriction. The problem with the subjects in the Minnesota
Starvation experiment was that they were eating just enough to keep them out ketosis and keep
their metabolism primed for burning carbohydrate (glucose), so they couldn’t use their body
fat for energy. This explains a lot of things like why they
were losing their strength and were very sluggish and cold. It also clears up why Upton Sinclair said
fruit or light meals were just enough to keep him ravenously hungry and far weaker than
if he had just eaten nothing. As I explained in my last video, insulin is
necessary for glucose to get into the cell to be used for energy. When you eat carbohydrates, the pancreas secretes
insulin to deal with it and too much insulin hampers the action of something called hormone
sensitive lipase which is necessary to mobilize fat and use it for fuel. Though, keep in mind that grains or refined
carbohydrates will provoke a much higher insulin response than say green vegetables. Now because the body is having a hard time
using its fat for fuel, it will do a couple things: One, it will simply slow down metabolism
to preserve energy. In the Minnesota Starvation experiment, the
subjects metabolism dropped by 40 percent. Their bodies didn’t have access to its stored
energy, and their restricted calorie diets don’t provide much fuel so there’s no
choice but to slow down the metabolism. Ironically, in the case of fasting, as Jason
Fung points out – metabolism actually goes up. “If you don’t do anything about your insulin
and just reduce your calories, your metabolism goes down. But what happens during fasting? Well, here’s a study of 4 consecutive days
of fasting. What happens to your REE – this is this middle
line here, that’s the resting energy expenditure. It doesn’t go down, it goes up. You’re burning more energy than you did.” The other thing the body will do when it can’t
use fat for fuel is break down muscle into glucose through a process called gluconeogenesis. The body doesn’t want do this too much because
it’s not very smart to completely eat through something as important as muscle, but when
it can’t access its own stored energy it’s more likely to resort to this. This is why you’ll experience more muscle
loss on caloric restriction than if you ate nothing. When you are fasting, Human Growth Hormone
is released. As the name implies, Human Growth Hormone
is an anabolic hormone – a hormone conducive to growth. In Leningher’s Principles of Biochemistry
textbook they give the example of how injecting the human growth hormone gene into a mouse
makes it unusually large. As explained in Guyton’s Textbook of Medical
Physiology: “…growth hormone also mobilizes large quantities of free fatty acids from
the adipose tissue, and these in turn are used to supply most of the energy for the
body cells, thus acting as a potent “protein sparer.” “That is human growth hormone is protecting
your muscles from breaking down. The study I referred to earlier about subjects
undergoing an 84 hour fast shows that growth hormone rises significantly after the second
day of fasting. As mentioned earlier, you should enter ketosis
sometime within the first 3 days or so of fasting, and it depends on how much you are
moving around and what your diet was like before starting the fast. The state of ketosis is a great indicator
that your body is making good use of its stored body fat for energy. In Tim Ferriss’ book “Tools of Titans,”
Tim talks about his first clinically supervised 7 day fast. For some sort of liability reasons, he wasn’t
allowed to exercise or leave the facility. Considering exercise is a potent stimulator
of human growth hormone and will help deplete glucose stores, not getting any exercise is
a great way to prevent yourself from getting into ketosis during a fast. It’s also a great way to lose muscle. Tim says he lost 12 pounds of muscle during
the overly restrictive clinically supervised 7 day fast. But, when following a protocol designed to
get him into ketosis as soon as possible – involving things like 4 hours of brisk walking, he did
a ten day fast and apparently lost zero muscle mass. One last factor in Ketosis preserving muscle
is leucine. When you’re in ketosis, you have a higher
fasting blood leucine level. And leucine is a key branch chain amino acid
that has an anabolic effect on the body so it preserves lean body mass. A lot of people interested in building muscle
may be worried that fasting or a ketogenic diet wouldn’t work for them because insulin
and therefore carbohydrates are necessary for protein synthesis (i.e. muscle growth),
but actually this leucine fills that role and is a good trigger for protein synthesis. So, just to sum all this up: compared to a
conventional calorie restricted diet, fasting means you lose more weight in the form of
fat, you keep more muscle, you have more energy, and you are less hungry . If proper weight
loss is your goal, it might be better to eat nothing at all rather than eating a conventional
low calorie diet.

Fasting vs. Eating Less: What’s the Difference? (Science of Fasting)
Tagged on:                                                                                                                                                                                     

100 thoughts on “Fasting vs. Eating Less: What’s the Difference? (Science of Fasting)

  • June 23, 2017 at 7:04 am
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    Just in case I should also say that of course you need to balance fasting with eating – You need to survive off of something. I have been doing intermittent fasting the past year (22 hours fasted, 2 hours eating – you can widen it to 16/8, which still provides great benefits) and will fast for a couple days every other month or so. Several other people have recommend a routine like this – Tim Ferriss recommends doing a 3 day fast once per month and a 7 day fast once per year.

    Reply
  • August 5, 2019 at 3:34 pm
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    I will never understand all this…I am 64 years old…I weigh the same as when I was 18years old.I never …and I mean never..buy fast food…I dont eat sweets or chocIates.. eat healthy food…that I prepare myself and I train 6days a week.Sounds boring…no !!..this is what work for me.I am the healthiest person I know….so far!🤣🤣

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  • August 6, 2019 at 3:53 pm
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    Am I allowed to drink water during fasting?

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  • August 7, 2019 at 5:26 am
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    To save some people time to have a more satisfying life just try to cut some things out of your diet. You don't have to eat so much or so little, that's not how to do this.

    Focus on clean and pure food like lean meat, steamed fish, steamed veggies without seasoning. Go easy on the carbs and eat less sugar. 1 or 2 alcoholic drinks are fine.

    Enjoy things at a medium and you'll feel better.

    Reply
  • August 7, 2019 at 7:54 am
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    8:45 tomatoes are not fruits

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  • August 7, 2019 at 7:28 pm
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    I dare anyone go week without ANY food. You'll faint and gonna be so weak that almost unable to walk. This video is dumb af.

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  • August 7, 2019 at 8:29 pm
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    It’s true, I don’t get hungry until dinner time.

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  • August 8, 2019 at 3:10 pm
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    Ah ha… break… fast… Nice. I get it.

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  • August 8, 2019 at 5:30 pm
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    Less starchy food and 🍞. Low carb diets pretty much is the consumption of veggies and fruits. Cut sugar out (except fruits and veggies) bam there ya go, you won't be over weight but now it's up 2 u on how you want to look as far as physique.

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  • August 8, 2019 at 6:13 pm
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    "I recommend 5% from carbs, 25% from protein, 75% from fat". That's 105% LMAO

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  • August 8, 2019 at 7:13 pm
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    so how long do i need to fast in order to enter ketosis?

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  • August 8, 2019 at 11:49 pm
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    Fasting + Moderate Exercise = Best Results ♥️

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  • August 9, 2019 at 3:38 am
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    18 MONTHS 7 DAYS A WEEK USING 18 – 6 – WENT FROM 220 TO 185 AND HAVE KEPT IN FOR 7 MONTHS – NO DIET – i EAT AND DRINK NORMALLY DURING MY 6 HOURS….

    Reply
  • August 9, 2019 at 10:25 am
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    Eat every two hours youll lose weight

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  • August 9, 2019 at 11:00 pm
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    What has worked for me was I ate one healthy meal a day cut out sugar for over a week except fruits and exercised and drank water…. fat melted off me

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  • August 10, 2019 at 5:30 am
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    How about if you keep a strenuous work? Or jogs/runs? Would fasting still apply without doing damage?

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  • August 10, 2019 at 4:06 pm
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    waht weak men. ive been on a 1300 kcal a day diet for exactly 3 months today, lost 50 lbs. im on a high fat low carb diet though.

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  • August 11, 2019 at 11:58 am
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    Can you please do a video or recommend a book or something on how to increase muscle mass while fasting?

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  • August 11, 2019 at 11:32 pm
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    I eat like a king Monday through Saturday, and then fast on Sundays. I feel great. I hit the weights and get a calorie surplus for most days, but then rest on the weekend (and fast on Sunday) which is preventing me from packing on a bunch of fat. I've been getting consistently stronger and look and feel better since I started this about 2 months ago.

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  • August 13, 2019 at 6:06 am
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    About the extended fasting (no food for many days): The four other people that tried it at the time died. It could be argued that they were already unhealthy, but extreme fasting can and does kill.

    Reply
  • August 13, 2019 at 2:05 pm
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    If iam fasting then can i continue my workouts and exercises??? Anyone please reply.

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  • August 13, 2019 at 3:42 pm
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    Is this video saying it’s okay to be anorexic ?

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  • August 13, 2019 at 8:20 pm
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    I know that I was going on eating around 9 a.m. and then not for the rest of the day maybe a small snack around 4 or 5 p.m. and then not eat till next day. But I was always hungry and tired. As soon as I cut carbs to really low and increase my protein and vegetables did I realize that my cognitive function was really through the roof and I wasn't as hungry or tired. I stuck to the same times of eating. And my days usually go from 4 a.m. to 10 p.m. because I work early and have kids. I think the effect for me was so instead because I already eat so little. I bet if I did start fasting it would really improve me far better than just intermittent fasting.

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  • August 14, 2019 at 1:42 am
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    thank you for your wisdom.

    Reply
  • August 14, 2019 at 3:33 pm
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    what is the purpose of fasting – to lose weight? – then why would there be a need to fast again (once you've lost weight)? do people stuff themselves after the fast?

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  • August 14, 2019 at 11:55 pm
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    Unfortunatelly if I don't eat my head will start to hurt. And not even painkillers solve head pain induced by hunger. So unfortunatelly thats not a path I can take.

    Reply
  • August 15, 2019 at 1:21 am
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    Im sold

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  • August 15, 2019 at 2:42 am
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    What if you have your calories restricted by a couple but keep up with the same amount of healthy carbs and fats and higher protein?. It’ would be ridiculous to think that fasting is healthier then feeding my food with all the nutrients I need but slightly less calories

    Reply
  • August 15, 2019 at 4:15 am
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    This is what I'm actually scared of. Going to "starvation mode" says by my boyfriend who's a nurse student. That's why I restrict my food but it doesn't do anything to me other than make me more hungry.

    Reply
  • August 16, 2019 at 3:10 pm
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    History: For thousands of years FASTING was known as a real world treatment against many metabolic disases and body fat.
    Modern People: We can't figure out why none of our "diets" seem to work!
    History: Ever tried fasting?
    Modern People: Eww…

    Reply
  • August 16, 2019 at 4:17 pm
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    Also you know that keeping a ketonic diet in a long period of time leads to an increase in develop diabetes?

    Reply
  • August 16, 2019 at 11:47 pm
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    Just found your channel. I really appreciate that you dont edit a bunch of loud annoying music into the video. Im also glad your vocal tone is inoffensive and you explain things in a clear and easy way to understand.

    It seems a weird thing to be happy about, but great stuff! Keep it up!

    Reply
  • August 17, 2019 at 5:37 am
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    The original experiment was just white men. The basis of science and medicine is on a white guy. But women's bodies work differently, and so too do different races. Hormonal and genetic makeup can and do change how our bodies work.
    This is an example of subconscious bias in science. A white man is the default, no one thinks twice to include different subjects. And there isn't some grand conspiracy to keep others out. This is just the reality of gatekeepers not even thinking twice about others.
    Unfortunately, this is why many medications don't work on women, or not work as well. And then women don't even know why, and women do die or suffer because of this.

    Reply
  • August 17, 2019 at 7:35 am
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    I just bought dinner and now I don't want to eat it.

    Reply
  • August 17, 2019 at 6:57 pm
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    Welp lets try a Ramadanchallenge

    Reply
  • August 18, 2019 at 2:04 pm
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    Will you do a video on prolonged fasting? Like the obese man that lost all that weight by fasting in the video?

    Reply
  • August 19, 2019 at 11:15 am
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    I’ve done a water fast for tow days and I end up fainting due to a low blood pressure 😔

    Reply
  • August 19, 2019 at 12:31 pm
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    When doing an extended fast, like Tim Ferriss did, is exercise the only way to prevent muscle loss?

    Reply
  • August 19, 2019 at 7:36 pm
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    I wish you'd mentioned that the Minnesota Starvation Experiment was run by Ancel Keys, who would later recommend that the entire world should follow the high-carb low-fat diet that his subjects suffered so greatly under during this experiment. Keys' other major contribution to the world was figuring out how to stuff nearly 3,000 calories in a rebranded Crackerjack box. Controlling what other people are able to eat is the common denominator in all three. It makes you wonder what was going on in Keys' psyche, it really does.

    Reply
  • August 19, 2019 at 10:48 pm
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    Everytime i fast
    I have stomach upset
    So fasting is not for me

    Reply
  • August 20, 2019 at 2:31 am
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    So you say I should exercise while fasting ?

    Reply
  • August 20, 2019 at 6:17 am
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    I wanted to ask something, if anyone out sees this, am I suppose to not drink water as well when I fast??

    Reply
  • August 20, 2019 at 1:58 pm
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    What if what we call hunger pangs were instead our body’s way of communicating that we are just getting to the point where our body can relax for a minute? Just because a group of pathological liars told me it was a “hunger pang” I was experiencing does not make it so. To my way of thinking, what you call a hunger pang, I call my bodies way of saying “thanks for the break”…

    Reply
  • August 20, 2019 at 2:00 pm
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    Just because your hungry it doesn’t mean you have to eat…

    Reply
  • August 20, 2019 at 2:28 pm
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    so fasting is better but what about fasting and hitting the gym does the muscle can repair it self can it still grow?

    Reply
  • August 20, 2019 at 4:33 pm
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    Love your channel man

    Reply
  • August 20, 2019 at 8:41 pm
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    Can you do a video on the science behind consuming less combined with intensive exercising?

    Reply
  • August 21, 2019 at 5:08 am
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    I have done four 8 day water fasts in the last 44 days. I feel increasingly better during them. Plan four more. No supplements, no doctor supervision, no careful refeeding. Work out every other day take an hour plus walk daily sometimes two. Work at my job. Losing a ton of weight, feeling much better. But internet says I will die of shrunken organs, lost muscle and heart failure. But not feeling anything like that. Weird.

    Reply
  • August 21, 2019 at 1:57 pm
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    I hear so much of you should just eat less but more often to keep ur body burning the calories…even when it's true, it isn't nearly as effective fasting so u don't have to eat and instead have that time for sth productive

    Reply
  • August 21, 2019 at 4:45 pm
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    Thats why u dont see many fat muslims

    Reply
  • August 21, 2019 at 6:54 pm
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    I have a very hard time believing that man survived over 300 days without food, only drinking water, coffee, and tea. Unless he was being monitored 24/7 i don't believe he didn't eat anything.

    Reply
  • August 21, 2019 at 8:53 pm
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    I’ve survived 7 day cocaine binges feeling great, when I stopped and ate food I felt terrible

    Reply
  • August 21, 2019 at 10:06 pm
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    Fat people fasting. Big deal. What are the benefits if you're thin?

    Reply
  • August 22, 2019 at 4:18 pm
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    watching a fasting video and eating while watching . . . .

    Reply
  • August 22, 2019 at 11:29 pm
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    Athlean X told me consistency is the key
    is fasting gonna keep me lean 365 days a year ?

    Reply
  • August 23, 2019 at 1:46 am
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    9:23
    Nobody:
    The Red Line: REEEEEEEEEEEEEEE

    Reply
  • August 23, 2019 at 2:37 am
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    Ive tried it for a while now but while I can lose weight, I always lose strength and muscle after fasting

    Reply
  • August 23, 2019 at 5:31 am
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    I have a question. I hear a lot about fasting, but personally, I cannot fast for more than so many hours during a day. I become hypoglycemic with very undesirable results. How do you explain the safety of fasting, does it not cause hypoglycemia and associated health risk with it?

    Reply
  • August 23, 2019 at 8:03 am
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    I've been eating like this all my life. Not because it's trendy, I just don't like breakfast (or eatig really early, before work) and was never hungry in the evening. So I usually ate at 5 or 6 p.m. and then nothing until 10 a.m. the next day. Never had any weight issues or health issues. The only time I really got a bit fatter was when I started listening to all those "breakfast is the most important meal of the day" theories and forced myself to eat before going to work.  Well, I'm glad it has a name now. 😀

    Reply
  • August 23, 2019 at 11:46 am
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    what breaks a fast though? anything with calories? coffee technically has a few calories… what if i chew gum, or have a diet coke, or take a gummy supplement? those technically aren't zero calorie, so is that not a fast?

    Reply
  • August 24, 2019 at 4:29 am
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    I used to limit my calories and would find myself constantly thinking about food. It was distracting and horribly impractical. The weight wouldn’t stay off either. There were times I would treat myself and that little treat would be reflected on the scale. Then I would try harder the next day and it was an endless cycle. But when I discovered intermittent fasting, I stopped thinking about food during my fasting window. Plus, I could eat more during my eating windows and reach my point of satiation.

    Intermittent fasting just fits my lifestyle more and is more sustainable for me. I’d recommend doing your research, consulting a doctor if you have a condition and then trying it yourself.

    Reply
  • August 24, 2019 at 5:28 am
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    Vegetable fast count? I want to eat a bunch of veggies still. Guessing carrots are out though.

    Reply
  • August 24, 2019 at 7:21 am
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    This and the Wim Hof method would hella make a difference

    Reply
  • August 24, 2019 at 11:37 am
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    What about your supposed metabolism slowing down and causing weight gain?

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  • August 24, 2019 at 3:17 pm
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    It's easy if you're poor like me

    Reply
  • August 24, 2019 at 7:49 pm
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    I'm an ectomorph, so my metabolism is on overdrive all the time and I can't gain fat at all, so if i fast there would be none of it to burn. But with Leucin being a thing, would i reap many physical and mental benefits from excercise + a diet of pure fruity protein shakes and muesli bars?

    Reply
  • August 24, 2019 at 11:32 pm
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    Guys I would just recommend eating healthier and having portion control. Also if you start to feel full stop eating. Overeating is a reason why so many people gain weight. You don’t have to finish your full plate and it’s okay to have left overs

    Reply
  • August 25, 2019 at 8:05 am
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    Can I drink water while fasting? Or unsweetened tea? I'd be super grateful if someone could answer me❤️

    Reply
  • August 25, 2019 at 12:16 pm
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    i suffer from anorexia and i’ve been fasting for 90 hours, it’s really dangerous and i hope i recover soon

    Reply
  • August 26, 2019 at 3:07 am
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    What about all the enzymes your body synthezises every day from proteins? If your body isn't asking you anymore for food doesn't mean it doesn't really need it.

    Reply
  • August 26, 2019 at 3:24 am
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    Are you supposed to fast everyday or how does this work and what's the difference between intermittent and prolonged fasting?

    Reply
  • August 26, 2019 at 10:28 am
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    Im disgusted that I'm going to have to lie to my family and coworkers about this and say Ive been eating less unhealthy food instead of telling them about this- their minds are so sunk down into cultural tradition and what they believe is right that they would hold me down and shove food in my mouth if they felt it necessary.

    Reply
  • August 26, 2019 at 9:06 pm
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    Unrelated : What is the movie clip at 09:39 … a man lifted out of something, then put on table with electrodes and needles. It looks intriguing.

    Great video by the way.

    Reply
  • August 27, 2019 at 12:58 am
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    Doesn't the amount of time the body takes to enter ketosis also depend on how active a person is (a.k.a. how many calories they burn thru on average)? I would imagine that a person who exercises and works full time will enter ketosis much quicker than someone who lives a sedentary lifestyle. Idk im still learning

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  • August 27, 2019 at 4:32 am
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    Ketosis is also the final state the body goes into when you are dying. Does that sound healthy?

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  • August 27, 2019 at 4:43 am
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    Yoooooo at 00:35 the second dude on the left 🤭🤭🤭🥴🥴 dat jawline

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  • August 27, 2019 at 9:03 am
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    I think cos in the primary study it wasnt a personal choice or drive to eat less.

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  • August 27, 2019 at 5:01 pm
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    Can someone share the idea if person trains twice a day? I assume the person skips to eat pre workout meal for both of two Training . Should be eaten meal after each workout or start to eat after finish second workout which means 1 meal instead of 2 meals after workouts . Thank you for now guys

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  • August 27, 2019 at 6:50 pm
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    so if i keep doing my regular workout, i will both lose fat and maintain muscle? maybe even gain some more muscle?

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  • August 28, 2019 at 9:54 am
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    Fasting plus HIIT instant = fit

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  • August 28, 2019 at 10:32 am
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    But what happens the rest of your body? Are you getting enough nutrients and vitamins for healthy bones?

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  • August 28, 2019 at 10:55 am
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    @WhatI'veLearned if doing a fast and working out during the fast would it hinder or help the fast if you supplemented with BCAA after the workout in water?

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  • August 30, 2019 at 6:54 am
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    Thinking of eating only on Mondays, Wednesdays, & Fridays.

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  • August 30, 2019 at 6:56 am
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    Ketosis is hard on your kidneys.

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  • August 30, 2019 at 9:22 am
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    11:03 where was that picture taken?

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  • August 31, 2019 at 11:08 am
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    How about the endurance of the one who fasted?

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  • August 31, 2019 at 12:09 pm
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    watching this while eating a bag of doritos

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  • August 31, 2019 at 12:11 pm
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    I never put 2 and 2 together but now after this vid I realize it was way easier for me to eat nothing for long periods of time like gaming 3-5 days straight with just sleep in between than it is to me to eat a snack from time to time and being hungry

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  • August 31, 2019 at 7:04 pm
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    Since Muslims fast contentious month from sunrise to sunset , plus two days a week (for the extra religious) , they will concur what you have stated about fasting being hard in the beginning only

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  • August 31, 2019 at 7:51 pm
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    the KEYFACTOR here is MEAT

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  • September 2, 2019 at 5:01 pm
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    9:44–10:00 wtf are u talking about that's such nonsense

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  • September 3, 2019 at 4:31 am
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    How to fast on my case? I tried to before but on the 3rd day ended up with ulcer symptoms. Help please…

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  • September 4, 2019 at 4:17 pm
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    when is the best time of the day to eat? Just asking 🙂

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  • September 4, 2019 at 11:05 pm
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    Great informative video but some of the animations and pictures didn't make sense 😂

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  • September 5, 2019 at 3:11 am
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    So what happened when people were so hungry they resorted to cannibalism. They had too much to eat?

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  • September 5, 2019 at 7:44 pm
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    I think the increase in them wanting food so much while at a caloric deficit is because they are eating High in carbohydrates.

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  • September 6, 2019 at 8:46 am
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    Can fasting affect testosterone or sex drive?

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  • September 7, 2019 at 12:26 pm
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    Is it possible to fast but to gain some weight while at it and then keeping it?

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