very low bf% can kill you?

Not being an expert on the matter, I still think you'd have to be anorexic to reach that...
 
A guy i know hit 3% but he had an energy dense diet as he was burning so much of the energy he was getting the full ammount of nutrients without having the fat gain. He did not stay at this for long though. Staying at it this long would have detrimental affects on the endocrine system.
 
When I wrestled, a vietnamese kid had 4% bodyfat maybe less. But the coach said he can't lose anymore weight. he was 111 very tone tho.
He like to eat a lot of rice which made him gain few pounds for weigh in. So he had to lose the water weight.
 
low bodyfat liek that will also stunt testosterone production in men, women will stop ovulating normally (they may stop or they may have a period every couple weeks...), and i think it can also lead to fat soluble vitamin deficiencies if you keep it low that long (similar to a diet too low in fat).
 
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