Volleyball! Now we're talking vertical jumping. If you are going to block, if you're able to spike, you'd better have a great vertical jump. It is good to be tall. It is good to be strong. But the greatest skill a volleyball blocker or hitter can have is a maximum vertical jump. The Jump Manual can add 10 inches to your vertical jump, guaranteed. Try it free for 60 days and see for yourself. Well, only if vertical jumping is important to you.
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