|Yes this Vertical Jump Training claims that you can achieve an increased vertical lift of 10 inches, by putting in the work specified in the Jump Manual and achieving that in roughly 12 weeks.|
Jack Hiller has been developing this program the Jump Manual - vertical jumping over the last 10 years and has trained and coached a considerable amount of athletes to understand the concept and practice the system and achieve great results. Having specialized in the field of a full time vertical jump and quickness trainer he considers it a real passion to be able to help young people to reach their potential.
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