how long was your friend working out for? Was it daily?
Yes it was daily, before going to work full-time as a bartender!
I agree that fasting can be very beneficial for health but everyone likely has their own threshold of how long it is safe to fast for. You most definitely don't want to get down to the point where your body is attacking your organs for energy or amino acids.
That I absolutely agree with you. However I believe that on a fast there are many sources of which your body is pulling energy from, far more than just fat in the process of autogaphy to be converted into energy.
Also, the amount of energy actually required by the human body to survive, is I would say, surprisingly less than most would imagine. Given the fact that a portion of the food we consume is turned around and utilized to digest even more food, the truth of the matter is, during a fast, you utilize way less energy than usual.
RE: I Quit Eating for 28 Days [Water Fast] : Day 8 (Focus)