No, this is not about an adult book. The Jump Manual is a very good eBook by Jacob Hiller that promises that you can increase your vertical jump height by 10 inches in the first 12 weeks or you get your money back! That is on top of a 60-day money back guarantee, anyway, so you just know that he means what he says.

This training consists of a guide that will walk you through the needed steps to take to get your body to do that which it really wants to do. The manual has 15 sections and covers such things as:

• The LAWS of the vertical jump improvement
• The 9 variables of an explosive vertical jump
• Explanation of the Max Explosion Workout.

The pros of this course are that it really does do what it says and proves that by allowing you to actually watch people doing it, so you can see how it is done and not just read about it.

The only con might be that you do have to make a commitment to this.