myostatin deficiency/double tendons

No.11398811 ViewReplyOriginalReport
Do you guys know what causes M.D. in human males,and if theres any way to trigger in ,trough training or drugs?
Ive also heard reports of men with"double tendons";is this a myth or a documented medical condition?
Also what makes humans less powerful than gorillas in muscular terms? muscle size?tendon/ligament power?