i got jumpsoles a few months ago and i completed the 2 Month Plyo Program and i gained about 8 inches im going to re-do it to gain more.

it also has speed and quickness, power and explosiveness workouts that REALLY help out

but im warning those people out there who have bad conditioning or never worked out really hard before that this program will kick your ass, its really demanding, as a athelete i found it a bit hard myself but i would reccomend it fully!