Gain Better Jumping Skills with the Jump Manual
The Jump Manual is a vertical jump program authored by Jacob Hiller. Jacob Hiller is not new in the jump industry; in fact he is a popular trainer who has been training various athletes from different disciplines including athletics, college dunkers and college athletes for years now.
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elisaley7 Profilo elisaley7 27 apr 14, 11:55:22
The Jump Manual is a vertical jump program authored by Jacob Hiller. Jacob Hiller is not new in the jump industry; in fact he is a popular trainer who has been training various athletes from different disciplines including athletics, college dunkers and college athletes for years now.