if we should go all scientific on shit neji had the biggest risk of being killed of bloodloss with that giant hole right above his heart, chouji got emptied on fat but unless those pills took away all his muscles to he would survive for a while just look at the jews during world war 2 they were skinnier than chouji yet walkign around, and all those pills did was make him skinny really.... i know it was a big fuss about they being suicide pills and shit but whatever.