Developed by trainer Jacob Hiller, the Jump Manual provides a comprehensive approach to adding inches, and perhaps feet, to your vertical. Hiller contends that many coaches don’t really understand all of the physical aspects that go into jumping, and his Jump Manual promises to improve your vertical by at least 10 inches or he will double your money back.

Aside from focusing on the physical aspects of “vertical explosion,” the Jump Manual also teaches athletes about nutritional secrets that can help improve their overall performance (jumping in particular). Since Hiller contends that most coaches don’t know how to teach their athletes to focus on the total package, Jump Manual approaches jumping from 9 different variables, combining strength and quickness to produce amazing results.

Jump Manual is the only vertical jump program we know of that includes a 24/7 support line, manned by actual coaches, that guarantee answers within1 2 hours or less on every question. Most of the other vertical program authors don't even reply to emails!

As long as Jump Manual is legitimate (and according to a slew of online testimonials and user feedback it is), there is no question that Jump Manual can seriously increase your vertical explosion capabilities – your jump. No matter what level you are at as an athlete, at least 10 inches (whereas many programs are advertising as much as) added to your vertical can seriously increase your potential for almost any sport. It comes with a return guarantee you can depend on.