So, do you think vertical jumping is important in tennis? Federer has quite a leap. And think about Pete Sampras. Picture him at the top of the jump as he served an ace. Maybe that vertical jumping ability gave him just a little more power than his opponent. If you're interested in improving your overhead smash or even if just a little more power in your serve would serve you well, then the jump manual is for you. It will take your vertical jumping ability to a new level.
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