How long will it take me to practice to be able to jump high enough to dunk? Detail: I am 16. I can almost touch the black box of the basketball board(jumping)
It really depends on your skill and how athletic you are, just keep practicing and by the sounds of things you're doing good so far.
Do squads every day. But as you go up try jumping, and also try using ankle weights everyday, thats what I do
It can take as long as you want it to but you will have to do very well.