Jacob Hiller, internationally recognized vertical jump training specialist, will be releasing a new version of The Jump Manual. The release is scheduled for August 2011. Hiller is going to release information on a scientific system of measuring the vertical jump. Hiller says this ‘top secret’ system will help athletes improve their vertical jump in ways [...] Jacob Hiller, internationally recognized vertical jump training specialist, will be releasing a new version of The Jump Manual. The release is scheduled for August 2011. Hiller is going to release information on a scientific system of measuring the vertical jump. Hiller says this ‘top secret’ system will help athletes improve their vertical jump in ways [...] Leave a Reply
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