I NEED TO LEARN HOW TO JUMP HIGHER!!!! i know like working out calf muscle and stuff helps but why do some people natually jump high. im 5’9” and can touch 9’7” and my friend who is 5’8” can touch 10’2”… WHYYY!!!!!!!!!!!!!!

If you have used it tell me how many inches you gained and you can also tell me about other vertical jump programs that work

I recently bought jumpsoles..and i want to know the best workouts to do so that my vertical can increase efficiently. thankss =P

I know jump rope and just practicing my approach is good, but what other things can I do to get my jump higher for hitting/blocking?