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Immersiveunreality said:
JWeinCom said:

If you don't eat for two weeks, you will lose a lot more than water.  Your body needs fuel to keep going, and it can't use water as fuel.  

Part of it will be muscle and part fat, but why would it only be a small quantity of fat?  I'm legitimately asking cause I've heard this, and never understood it.  Fat is essentially what your body is saving for a rainy day.  So, why would your body burn muscle instead of fat when that rainy day comes?

Because fat can only be broken down and turned into energy to feed the muscles and organs at a certain speed differentiating from person to person ,the more calorie deficit a day the more muscle you might break down if the body is not able to turn nutrients in the stomach or fat into energy and transport that fast enough.

Omega fatty acids help greatly with breaking down fat storage and transporting them and it is adviced to take in enough of it when going on a semi heavy or heavy diet.

Also heavy cardio can be counterproductive cause the body will tend to use the fast energy reserves.

So then, would that mean that muscle is more easily metabolized?