When it's close to " nothing " I'd say less than 10%. In a survey taken by USA Today several years ago, the most popular answers for this very question was " about 3 % " and " very little ". 10 % is...
Too much creatine would create an excess of ATP in the body and i think due to the hyperactivity of major metabolic processes in the body it can cause a major loss of water(dehydration)