I started training to become a better athlete and after about 8 months, I feel that I am in good athletic condition except for one thing: my vertical jump. I am 6'1 and can easily grab the rim, but I just cannot dunk. What exercises can I do to put my fucking forearm into the rim? Squatting/deadlifting? I have heard that power-cleans are effective at this, but I am scared to hurt myself because I've never done them before.