The correct answer is 20% on average. The ideal percentage rate of a healthy man with normal weight is 18 to 22%. However, a range of 7-13% is considered normal for male professional athletes, because their muscular mass is much greater. The physiological minimum rate which is acceptable for males is 4-6%.
It’s called a branch point, represents where a single lineage evolved into a distinct new one.
So you know that your measurements are exactly correct.
