There's really no reason for this. And I find it ironic that the ones doing these long fasts, usually aren't in great shape to begin with.
1-2 days fasts are fine and healthy.
If you're extending them out near 10 days, your body will begin using it's muscle for energy. This should NEVER be a goal for anyone......except if you're expecting a starring movie role as a prisoner out Auschwitz.
Your goal should be to lose fat. Not muscle, not simply scale weight.....but fat.
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