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what would happen if i didnt eat for 3 days

by Germaine Hauck Published 3 years ago Updated 3 years ago

When you don’t eat any food for 3 days, your body becomes sort of used to it. Your digestive fire slows down. The digestive fire has to be gradually increased and brought back to normal. 2

After your glucose and glycogen are depleted, your body will begin to use amino acids to provide energy. This process will affect your muscles and can carry your body along for about three days of starvation before metabolism makes a major shift to preserve lean body tissue.

Full Answer

What will happen to me if I don't eat for 2-3 days?

12/08/2021 · What is a 3 day fast? What happens? For me, a 3 day fast means no food at all. Water only. No coffee, no tea, no anything. Water and salt is okay because (for scientific reasons unknown) you do start to get muscle cramps the further you go on. So the salt helps prevent the cramps.

Is two to three days without food too long?

12/10/2021 · Day 3. A few surprising things happened today. Surprising thing #1. I didn’t feel tired at all today. Even though I slept poorly, I felt fine. Surprising thing #2. I wasn’t hungry at all today. I drank one cup of bone broth around 8pm. However, I didn’t need it. I only drank it because I hoped it would help repair my gut, like Ariane had ...

How much weight can you lose by not eating for 3 days?

21/03/2020 · What would happen if I didn't eat for 3 days? “You will likely lose more water weight than actually fat as your body uses its glycogen stores for fuel before dipping into actual fat,” she says. “As you release glycogen, you lose water and that is usually the reason for the rapid weight loss. Click to see full answer.

What happens when you stop eating for a day?

The big picture: after three days your body will have burned through your glycogen stores and started to feed you on ketones. Your body would have started a cellular detox via autophagy (a very good thing) and by day 3 your body’s production of growth hormone will have peaked. If this is your first fast and your diet prior to the fast sucked, you

A Surprising Thing Happened When I Stopped Eating For 3 Days

I fasted for 3 days as a personal experiment. Here’s my stick-figure depiction of what happened.

The Experiment

I planned to do a 1-day bone broth fast. Start with that, I thought, and then graduate to a 3-day fast later. That’s probably the reason I was able to overcome the mental barrier to even begin.

Day 0

On Dec 23, I finished dinner around 8pm. I ate two Factor 75 meals with extra butter (wanted to load up before the fast). I went to bed that night knowing I wouldn’t eat solid food the next day. Already my mind was pissed at me. It mostly whispered that I would lose muscle mass and sacrifice all the strength gains I’ve made in recent months.

Day 1

I woke up and my stomach was already grumbling. It had only been 12 hours and my body was already hangry.

Benefits of the Fast

Of my five reasons for doing the fast experiment, all were at least moderately successful.

What now?

As I write this, I’m no longer in ketosis. I ate a whole bag of KIND Granola tonight. I’m apparently back to being obsessed with food.

Why do I feel hungry after eating?

This happens because after just a few hours without food your body has already burned most of its readily available supplies of glycogen, which is mostly stored in the muscles and liver. During the next 2-3 days of fasting the entire stores of glycogen in the body are used.

What happens if you don't eat for 3 days?

Due to sudden lack of intake of food you may feel symptoms of nausea, dizziness, weakness, all of which are quite normal.

How long should I fast for weight loss?

Short term fast is characterized by drinking only water and refraining from all sorts of other foods. You may choose to do a short term fast of 3 days to rapidly lose weight or as part of a detoxification diet. However, a 3 day fast should be taken up by those who have good experience of taking one-day fast.

Can I take a 3 day water fast?

However, a 3 day fast should be taken up by those who have good experience of taking one-day fast. Hence, it is good to have a prior experience with the one day water fast first.

What happens when you fast?

During fasting the body is getting cleansed both at the physical and mental level. The body throws out toxins via the intestines. This can lead to formation of a thick white coating on the tongue which will not go away even after scrapping the tongue. The toxins from the body are also eliminated through the lungs.

How long can I not eat at home?

However, if you want to try not eating for 3 days at home, then some preparation is required. The first thing is to prepare your mind for the fast. It is advised to get guidance of an expert in the field before attempting a 3 day fast.

What happens when you stop eating and not eating?

During the time when you are not consuming any calories or food, your body will come very close to starvation mode.

What happens if you don't eat?

If all we eat is sugary junk, we will be hungry, lose muscle, and be vitamin deficient.

How to stave off disease?

Eat more or you’ll be vitamin and mineral deficient. Eating several “superfoods” at each meal is the only way to stave off disease. Here’s the problem: that’s not science, it’s advertising.

Does fasting help with diabetes?

In rodents [fasting] protect s against diabetes, cancers, heart disease and neurodegeneration, while in humans it reduce [s] obesity, hypertension, asthma and rheumatoid arthritis.”. Wow, anything that provides such powerful benefits across millions of years of evolution should pique our interest.

What happens when you fast?

When fasted, our body initiates essential processes that are turned off by eating–cleanup of cellular waste, breakdown of old cells, renewal of important bodily systems, and more. Without these processes, waste products build up (Alzheimer’s), cells turn malignant (cancer), and systems breakdown (immune degradation).

How long is intermittent fasting?

The distinction between intermittent fasting (12 to 36 hours) and prolonged fasting (2 or more days) is a blurry one. I cite studies for both in the content below. Some of the benefits of fasting accrue in both, while others are unique to either intermittent or prolonged fasts.

Is fasting a good thing?

When we eat, our body enters into a fed state. As with sleep and exercise, however, it’s entirely possible to have too much of a good thing.

How long can a mouse live without food?

Some studies call 24 hours of fasting for a mouse “intermittent” but mice die after 3 days without food while humans can survive for 3 or more weeks. If one day is “intermittent” to a mouse, then one week might be “intermittent” to a human.

Why do I feel hungry when I don't eat?

Perfect! Once you open up those stores of body fat, you are not hungry, because your organs have access to all the energy they need.

What are the diseases of abundance?

I tell him I’ve realised most diseases are diseases of abundance. Heart disease is excess debris in the arteries, Alzheimer’s is excess protein in the brain, Diabetes is excess glucose, Cancer is excess cells. And if excess kills us all eventually, spending some time with less may prevent it.

Can too much insulin cause a spike in blood glucose?

Too big a spike in blood glucose, from eating the wrong food or eating too much can lead to too much insulin being released . Insulin is a growth hormone. Too much growth leads to excess and as I realised earlier, excess leads to disease.

Journal entry

I took notes throughout and at the end of each day to describe how I was feeling. I've copied them unedited here.

Progress photos

Progress shots from the mornings of days 1 to 5 of the fast. We kept the tripod in the same place of the room each day and I tried to stand in the same place for the same lighting. However, due to the weather, some of the lighting is different for each photo.

Resources to learn more

If you want to learn more about fasting, its benefits and what happens during extended periods without food, I'd recommend the following resources.

Charlie Walks: A Novel Chapter 7

Charlie walks the tightrope between head and heart. Between one path and another.

Charlie Walks: A Novel Chapter 6

Charlie goes to a project downtown. Meets the security guard downstairs, gets the tag, goes up.

Charlie Walks: A Novel Chapter 5

Charlie writes a letter to Pauly. Tells a story about what he's learned from his secret project.

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Why Fast For 3 days?

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I learn things best when I’m in them. One of my rules is I can’t talk about anything where I don’t have skin in the game. I’d never done an extended fast but being a health nerd, I’d heard of their endless list of benefits. And if you’ve listened to a Tim Ferriss, Joe Rogan, Peter Attia or Aubrey Marcus podcast, you have too. I’d done …
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Day 1 (Friday) — I’ve Been Here Before

  • 74.7 kgs (164.7 lb) this morning. Nothing out of the ordinary. I’m meeting a friend at gym. We do a bodyweight workout, lots of crawling, lots of mobility work and then some kettlebells at the end. After the workout, we sit in the sauna for 25-minutes. I tell him about my plan to fast for the next 3-days. He asks why. I say it’s for an experiment and tell him about a few things I plan to measu…
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Day 2 (Saturday) — Learning Whilst Doing

  • I wake up naturally, go the bathroom and weigh in at 72.4 kg (159.6 lbs). My mouth is dry. Nothing which can’t be fixed with a few cups of water. I record my sleep quality as 5/5 and measure my waking blood glucose. 4.2 mmol/L on meter 1 and 4.0 mmol/L on meter 2. My Dad and I take the dogs for a walk. I feel fine aside from being a little snappier. Our dogs are on a dual lead. When o…
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Day 3 (Sunday) — Intermittent Sleeping

  • 6:45 am wide awake. I woke up three times last night. The first time I asked Alexa what the time was. 2:17 am. I’m a sleep fiend. It had been a while since I woke up in the middle of the night. The other two times were about an hour apart. Each time I felt alert enough to get out of bed, even though I’d only slept a few hours. No hunger but I still had a deep-down feeling. Something insid…
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Day 4 (Monday) — Business as Usual

  • 8:30 am. I’ve been awake for half an hour reading in bed sipping water. No wake-ups last night but I woke up feeling as if my sleep wasn’t ideal. I rate it 2/5 in my journal. My glucose levels are the lowest they’ve been so far, 3.0 mmol/L on meter 1 and 2.7 mmol/L on meter 2. Ketones are at 3.5 mmol/L. I sip salted water in the sun and then go to the cafe and order black coffee and plan ou…
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Takeaways and Findings

  • Tracking blood glucose and ketones every couple of hours is tedious. The hardware could be improved. There were times I forgot and times where I didn’t take a measurement because I was doing something else. I’m not stopping though. I treated the fast as the start of a longer-term personalised nutrition experiment. My goal is to get data behind how different foods and activiti…
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What Would I Change?

  1. Water only — If you count the black coffee, I didn’t really do a true water-only fast. This is something I’d change for next time. Water and electrolytes only.
  2. Low carbohydrates beforehand — The hardest part of the fast was when I was switching from burning glucose to burning fat. It was nothing unbearable but eating low carbohydrates or being in ketosis...
  1. Water only — If you count the black coffee, I didn’t really do a true water-only fast. This is something I’d change for next time. Water and electrolytes only.
  2. Low carbohydrates beforehand — The hardest part of the fast was when I was switching from burning glucose to burning fat. It was nothing unbearable but eating low carbohydrates or being in ketosis...
  3. Ketone measurements from the start— This ties into the previous point. It would have been helpful (and cool) to know my blood ketones from the start and all the way through to see how they changed.
  4. Measurements — My method of taking measurements is still imperfect. In an ideal world, everything would be at the same time each day, weight, blood glucose, blood ketones. But m…

What Next?

  • This was an experiment to learn more. And I did. I learn best when I’m in the middle of something. I don’t know why I was scared to begin. There was never a single time where I felt any discomfort higher than a 4/10. And after getting into ketosis, I achieved states of concentration like I’ve never felt before. I plan on doing more extended fasts at least once every 6–12 months. I’ve been playi…
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