Experiment: Extreme calorie deficit
vuco1990
Posts: 29 Member
So, what is this thread about? I had a week off, so I decided to make a experiment. I am gonna create extreme calorie deficit (2000 calorie per day) only by exercise ( bike and running ). My BMR is about 2000 and I was eating about that (maybe 100 calorie up or down ), so no starvation mode and my exercise is riding a bike and running every day and to be sure I am not doing something wrong I used heart rate monitor ( not mobile app, but real one with watch and everything ), and weighted everything I ate on my scale. I was never hungry, drank a plenty of water... My weight was 94 kg and remember that never could go below this weight (with my other MFP attempts). Little info about me... I am 193 cm and had this height since I was like 14, but in that age I had like 75 kg on this same height. I do not know if this is important, but when I gain weight it goes to my legs. I did only cardio because I have problem with my hand and lifting weights now is not a option. I always thought if I create caloric deficit my mass has to go down, but in my case it does not. After a week my weight was still 94 kg (did weigh myself in same time, same conditions..)
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So going into it, what was the point of the experiment? What were you trying to show?
You didn't necessarily not lose any fat. Weight can fluctuate quite a bit in one day based on what is in your digestive tract, water weight, etc. You may have caught yourself at a higher point in the day on both days.0 -
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Sounds like the Biggest Loser, but with more food. How many hours exercise did you do per day ?0
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So going into it, what was the point of the experiment? What were you trying to show?
You didn't necessarily not lose any fat. Weight can fluctuate quite a bit in one day based on what is in your digestive tract, water weight, etc. You may have caught yourself at a higher point in the day on both days.
Hm, I thought that if I create this kind of deficit I should lose at least 1-2 kg, because 14000 calorie is about that, but I did not lost a fraction of kg. I use to have 106 kg and by creating calorie deficit I would lose my weight according to caloric deficit I created, but now I am stuck. It seems that like I can not go below this weight. I know a week is small period of time, but I always thought that weight has to go down and there is not such thing as "plateau".0 -
Your body does crazy things when you do crazy things. I"m not saying you didn't lose weight, more like you body is dealing with the stress.0
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Yeah no0
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I don't understand what you did. You say you burned 2000 calories (and checked on a heart rate monitor that you really burned that much) and ate 2000 calories and you didn't lose even a fraction of a kg.... well no surprise there....
if that isn't what you did then you need to explain yourself more clearly.0 -
I normally don't say this to people but...
That was stupid.
What a crazy way to spend a vacation.
Exercise enough to create a huge deficit of that many calories and you proved nothing...nada...nil...except that maybe that was a stupid idea.
Eat something...workout at a NORMAL rate...and quit trying to out think your body...
I'll stop with this...there is more...but it isn't necessary to say it.0 -
- My weight ( 94 kg ) is some kind of "plateau"
- I thought that if I create extreme calorie deficit I would break that plateau
- So, my basal metabolic rate is around 2000 kcal
- I ate 2000 kcal and burned 2000 kcal with exercise
- That means that I am in 2000 kcal calorie deficit per day because my body has to keep itself alive and that is what basal metabolic rate means
- In 7 days (1 week ) I created 7*2000 kcal = 14000 calorie deficit which is about 1.82 kilograms if we convert it
- I lost 0 kilograms
How is this even possible?0 -
It never ceases to amaze me that in today's world with all of the information at our finger tips that the generation that should be informed...is so uninformed.
Not all of them...there are many that do research...think...and get it.
When I was in my twenties...the information was unavailable...it was standard to eat 1200 calories or less...no emphasis put on exercise...I just don't get it.
I am sorry OP but your experiment was illogical to start with...the fact that you spent and entire week thinking that you could exercise for hours a day and just drop the weight...is insane.
Did you honestly think that this was a healthy solution to breaking a plateau? sigh0 -
It never ceases to amaze me that in today's world with all of the information at our finger tips that the generation that should be informed...is so uninformed.
Not all of them...there are many that do research...think...and get it.
When I was in my twenties...the information was unavailable...it was standard to eat 1200 calories or less...no emphasis put on exercise...I just don't get it.
I am sorry OP but your experiment was illogical to start with...the fact that you spent and entire week thinking that you could exercise for hours a day and just drop the weight...is insane.
Did you honestly think that this was a healthy solution to breaking a plateau? sigh
NO, I did not thought that this way is healthy one. I thought it was matter of simple math.... You eat more than lose, you will gain weight and the other way around. I just applied "brute force" in extreme way.0 -
- My weight ( 94 kg ) is some kind of "plateau"
- I thought that if I create extreme calorie deficit I would break that plateau
- So, my basal metabolic rate is around 2000 kcal
- I ate 2000 kcal and burned 2000 kcal with exercise
- That means that I am in 2000 kcal calorie deficit per day because my body has to keep itself alive and that is what basal metabolic rate means
- In 7 days (1 week ) I created 7*2000 kcal = 14000 calorie deficit which is about 1.82 kilograms if we convert it
- I lost 0 kilograms
How is this even possible?
you did your maths wrong, that's how.
You didn't burn 4000 cals and then eat 2000 cals and not lose. I'm guessing that in reality you burned quite a bit less than 4000 cals and that you also ate more than 2000 cals. did you weigh all your food?
also, a bigger deficit =/= better. too big a deficit can cause all kinds of problems. If you really were 2000 cals in deficit each day, you should have felt extremely hungry, and probably light headed and in danger of passing out, and doing 2000 cals of exercise while you're only eating your BMR and not eating back exercise calories, would result in rapid glycogen depletion and you hitting the wall during your workouts, and that means feeling extreme levels of exhaustion. If those things didn't happen then you weren't in a deficit of 2000 cals/day. So it's back to you burning less than you thought you were and eating more than you thought you were
and just for general advice, aim for a small deficit and slow and steady fat loss. Weigh your food and log it accurately. Be realistic about calorie burns.0 -
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sounds like a stupid ****ing plan.0
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- My weight ( 94 kg ) is some kind of "plateau"
- I thought that if I create extreme calorie deficit I would break that plateau
- So, my basal metabolic rate is around 2000 kcal
- I ate 2000 kcal and burned 2000 kcal with exercise
- That means that I am in 2000 kcal calorie deficit per day because my body has to keep itself alive and that is what basal metabolic rate means
- In 7 days (1 week ) I created 7*2000 kcal = 14000 calorie deficit which is about 1.82 kilograms if we convert it
- I lost 0 kilograms
How is this even possible?
Probably because your body is reacting to the shock you gave it and is standing still.
True weightloss takes time and tweaking. That is why people use TDEE or eat a defecit, so that slowly over time your body adapts and adjusts at a defecit and uses fat stores as energy therefore creating true weight loss.
You did not do anything but give your body a jolt for a week and basically it is telling you "eff you be more consistant and treat me right if you want a true measured response from me."
You did nothing more than a 7 day fad or cleanse and then wondered why you miraculously saw no real and lasting results.
Take your time, research, learn, be patient and kind to your body. Be consistant.
Are u a fool or just really dont know what you are doing?
Of course I was not like some lazy slob who only watched tv 10 hours per day and said f *u*c*k it, now I am going to run 10 miles every day and ride my bike for like 20 miles. I would get a hard attack. I have been running for like 4-5 months now and riding a bike.. There is no way I could endure all that activity just by wishing it. The thing is that I did not watch on my calorie intake so much and still did lose weight, but now I am stuck.0 -
The opposite of a good idea. A plan that is sure to lead to hunger, irritability, verbal aphasia, and octopus laws.0
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Because your diary is private, we can't see the details of exercise or food to make suggestions.
How do you measure exercise calories burnt?
Do you weigh out food with decent scales?0 -
Well obviously the experiment was flawed for many reasons, firstly it was dangerous secondly it was done under the impression your HRM would give you an accurate account of how many calories you burned during this period. Also a week and one person hardly qualifies as a reliable experiment or good scientific methodology...please do not do this again for many reasons.
Also you mentioned measuring your food but where did you get your calorie and macro values?
People (often) Have No Clue How Much they Eat
People (often) are horrible at estimating their calorie intake.
Overweight and obese people are often the worst, but most people underestimate their calorie intake to some degree.
It’s true for men and women and people of all ages.
It’s true when people are given specific instructions on how to measure their food intake.
It’s true for dietitians.
It’s true even when people are paid to track their food intake.
In some cases, people who claim they can’t lose weight by cutting calories underestimate their food intake by 47%, and overestimate their exercise levels by 51%.75 Other data has shown that people can underreport their food intake by up to 2,000 calories per day.
Obviously your math is incorrect.
When People Create a Caloric Deficit — They Always Lose Weight
Studies using the rigorous standards outlined above have consistently shown that when people eat a calorie restricted diet — they lose weight.
That is, when researchers measure people’s energy expenditure, weigh all of their food and count their calorie intake, and force them to eat less food than they need to maintain their weight — they lose weight. The amount of weight they lose is also generally proportional to the size of their caloric deficit.
At this point, eating a calorie restricted diet and exercising (largely to burn more calories) are also considered the two most scientifically supported ways to lose weight. It works.
When you restrict your calorie intake enough to create a deficit, you lose weight. It turns out the reverse is also true.
Using rigorously controlled studies, we’ve found that:
1. When people are in a caloric deficit, they always lose weight.
2. When people are in a caloric surplus, they always gain weight.
Simply put you have miscalculated along the way, be it your tdee or bmr, calories in vs calories out etc.
I recommend stop the potentially dangerous experiments reevaluate and if you are still concerned have the numbers done by a professional and even consider getting tested if you believe you are somehow a unique snowflake that defies laws of thermogenesis.
Source:http://evidencemag.com/why-calories-count/
^But there is data everywhere that supports these findings.0 -
When you do extreme calorie deficit, your body can go into starvation mode, which slows down your metabolism and you can actually gain weight.0
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Not really.you can actually gain weight.
Well, not that's been shown in any research I've seen, anyway.0 -
I would get a hard attack.
It would be hard to run with one of those.... :laugh:0 -
I had one of those running naked, sounded like somebody clappingI would get a hard attack.
It would be hard to run with one of those.... :laugh:
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Well, I bet you won't be doing this experiment again!.lol!!!0
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Um no! unless you have discovered free energy perpetual motion, if that is the case I would patent that quickly and you just saved the entire planet from an energy crisis. Yay!!When you do extreme calorie deficit, your body can go into starvation mode, which slows down your metabolism and you can actually gain weight.
Some reading for you...
http://www.myfitnesspal.com/topics/show/1077746-starvation-mode-adaptive-thermogenesis-and-weight-loss0 -
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You DO realize that you're not actually eating your BMR of 2000 calories if you're netting ZERO?0
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OP is completely confusing, but one thing I got was that he has a BMR of 2000? What is your height and weight to have a BMR that high?0
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In his first post he states 193cm and 94kg. From his username we can guess he's likely around 24 years old.
I believe he's suggesting he's also doing 2000 calories worth of exercise a day (which is, of course, quite a lot!)You DO realize that you're not actually eating your BMR of 2000 calories if you're netting ZERO?0 -
OP is completely confusing, but one thing I got was that he has a BMR of 2000? What is your height and weight to have a BMR that high?
If you read it again you'll see his height and weight, I'm guessing English isn't his first language. I also get 2000 cals/day for his RMR by various methods from the posted data.
Biggest loser contestants eat a bit less than this and do similar or more exercise, as documented at http://press.endocrine.org/doi/abs/10.1210/jc.2012-1444
"The exercise component of the competition consisted of 90 min/d (6 d/wk) of directly supervised vigorous circuit training and/or aerobic training. Subjects were encouraged to exercise up to an additional 3 h/d. Dietary intake was not monitored; however, subjects were advised to consume a calorie-restricted diet greater than 70% of their baseline energy requirements"
TDEE was about 4000 cals.0
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