QUOTE(AaronFPS @ Jul 11 2013, 05:22 AM)
No, recent research suggests that fasting has a lot of negative health consequences. Better to keep eating; we evolved eating regular meals throughout the day, and if you fast the body slows the metabolism down and starts burning muscle tissue in preference over fat. So you become fatter and less muscular.
Fasting is bad? Try telling that to Martin Berkhan
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or Brad Pilon
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Which brings us to our next myth: Eating frequent meals will speed up metabolism
The single biggest factor that determines how much calories you burn in a day is your basal metabolic rate (BMR). This is the amount of calories that you burn in 24 hours at rest. If your BMR is 1700, then you will burn 1700 calories a day even if you do nothing but rest all day without doing housework, without eating, without sitting in front of your computer watching prawn. In other words, this is the amount of calories you burn in 24 hours just being alive.
Lesson #1: You still burn a huge amount of calories throughout the day just by being alive, even if you don't eat.
Processing food does burn calories. The thermic effect of food (TEF) is the energy required for digestion, absorption, and disposal of ingested nutrients. Let's say that you eat a food that has 100 calories and it takes 20 calories to process the food, you will still end up with a surplus of 80 calories whether you eat it in a single meal (100-20=80) or 2 meals ((50-10)+(50-10)=80). If you're trying to lose weight, it would make no sense eating 100 calories just to burn off 20. Wouldn't it make more sense not to eat the 100 calories in the first place? At the end of the day it eventually comes down to
calories in vs calories out Lesson #2: Calorie-wise, there is no difference whether you eat small, frequent meals or large, spaced out ones
Lesson #3: Remember The Golden Rule: Calories in vs calories out
However eating small meals frequently can help. If you're trying to lose weight, eating frequently can stabilize blood sugar levels which will help you to suppress cravings. If you're trying to gain weight, it makes eating much more manageable. Eating 6x500 calorie meals is much easier than eating 3x1000 calorie meals. But it has nothing to do with keeping your metabolism high.
And finally, the whole eating frequently myth started out when companies started producing supplements. These companies came up with things like"You need protein every 2 hours or you'll lose muscle mass" or "Drink this shake 3 times a day to raise your metabolism and lose stomach fat". The more we consume, the more capitalists make.
Lesson #4: Companies will brainwash people to buy their products more frequently and in larger quantities