i wanna know how to dunk a basketball?

most of these comments are retarded except for the cavs fan over there...at 5 7 u can dunk if you have the ability to jump first off can you reach over the rim? if you can because of your height you have to time your jump perfect....run from the 3 point line to the rim and about a foot away from the hoop and jump with one foot....and extend its easier if you can palm the ball...do not run from half court most people think that if you run from further you get more momentum and jump higher but in fact ur legs get some what tierd by the time you get there.....

it's not knowing how to dunk it's the discipline to train to increase your vertical jump at 5ft 7 and 13 it's going to take a while. You have to remember it's not going to happen overnight. I'm 14 and only just able to dunk at 5ft 10 but i have trained for the best part of 2 years not vigorous but still just small routines to get my legs stronger. After getting a high vertical, standard dunking is easy. You can't learn to dunk it comes naturally. Like riding a bicycle, people will be telling you lots of different things but in the end you just teach yourself.

You take a vary large cup and slowly place the B Ball in it.

Trying using something that can help you bounce and jump higher. Strength training is also helpful.

get really strong legs and be like Spud Webb

your 5'7. you cant dunk.