Board Thread:Wiki Discussions/@comment-25358381-20140918020735/@comment-25358381-20140918102339

Elveonora wrote: Prime is when the body is at its peak, 30-35 maybe.

For athletes, they hit their prime at around the age of 27, as this is when they have gathered an adequate amount of experience and their body is still still in its peak. I am not sure if that can be translated to ninjas though (due to factors such as: medical ninjutsu preserving body, drugs, jutsu being a valuable form of experiance, etc)