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25134) IP logged  Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36 
Christopher 
christophersleeman(at)freenet.de
Location:
Frederiksberg C
Friday, 8. January 2016 15:58  Write a comment Send E-mail
You can do this with or without the resistance bands, but the bands can help increase tension and maximize your explosive vertical force.


my blog post: jump higher
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