Training course to improve jumping ability quickly
The most famous vertical jump training program in America,
It is estimated that the vertical jump ability can be improved by more than 20 to 30 cm after practice.
The exercise process is hard,
The whole process takes 15 weeks.
After practice, you should supplement milk fat or something.
I hope this helps.
This is a diagram of the American professional training program for bouncing.
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. I hope I can help you. If you have any questions, I will answer you as soon as possible.