Im 14 years old 5’8" and 118 pounds. I was wondering what can i do to improve my vertical jump. I can jump between 30 and 32 inches already and my standing reach is roughly 7’4". I am just about 1/2 inch away from getting rim on 10′. What can I do to jump higher and be able to get rim and even be able to dunk at least a tennis ball by the end of the year?
