How Does Jump Manual Work?

Jump Manual becomes a manual consist of a program for you who want to improve your vertical jump. This program is designed not only for basketball player but also for other sport player such as volleyball player, football player, baseball player, martial artist, and many more. The training is lasted for about eight weeks to add 9 until 15 inches of your vertical jump. The highest score for vertical jump is 40 inches, and this Jump Manual training will help you to have that. (more…)