The jump manual is a vertical workout program that has become the number one training program for athletes that want to increase their vertical leap. 

Jacob Hiller is the creator of the jump manual and has trained many professional athletes how to jump higher. 

Any person that plays a sport that places any amount of importance in jumping knows that jumping is the most important thing you can improve in most cases.

So how do you jump higher.  Jumping is a science that has been perfected now and can result in very impressive increases in a very short time.  It used to be that you would have to train for months to add a couple inches on your vertical leap but now you can add that in a matter of weeks.