yeh it is most genetics but have u guys ever done those stretches or anything b4? obviously not. its permanent if u do them for a long perriod of time and u can gain waaaay more than an inch! just from hanging from a pole for about 15 mins everyday i have grown lyk 3 inches in the last 3 months!

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Age:15 Height: 5' 10" or so. Running Vertical Jump: about 33-35 inches
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