Early humans may have survived the harsh winters by hibernating
If i get a feeling i gained too much fat, i like to use fasting to get rid of it fast. 
Kinda surprised after 3~4 days of not eating i could still function perfectly most wouldn&#x27;t even see a difference. 
Strength did take a bit of a hit tho like could only operate on like 90% of max.<p>Never really went longer then 5 days, but I heard stories of people going complete 30 days without food consuming only water with some minerals and salt.