depends what reason you want to do it.
i have did a 7 day water only fast 2 times.
both times were hell. You have no energy, no strength, no euphoria
craving like mad, etc
lost around 14 pounds both times.
studies show you actually lose more muscle than fat on a fast, so don't believe the bullshit about ketosis saves/spares muscle.
if you want to do it for maximum fat loss - then do a protein only fast. ( known as a protein sparring modified fast in medical circles). Depending on your protein intake this will spare all/almost all of your muscle mass while stripping the fat.
if you want to fast for spiritual reasons, buddha tells us its useless. he starved himself to near death and got no closer to enlightenment, the middle path is the key
if you want to fast for detox reasons then i can se the benefit, however i would still take in some protein to spare your muscle while your ody detoxes - nothing else though.
also be carefull how you break a fast. The first time i broke the fast i was craving food so bad i ate chinese as my first meal. i swear the pain i was in after eating, my stomace was agony, i had wind, acid reflux , hear burn etc you name it i had it. i almost went to hospital.
the 2nd time i finished the fast i ate some red apples (to this day they were the nicest apples i ever tasted
) every 30 mins and felt fine.
