i've been doing exercesis like sprints and biking for a while now and the only increase i've gotten in length has been in the legs. is there any way to increase the upper body? does yoga or pilates help? i heard that when most men sit down beside eachother there about the same height but i'm usually smaller then people when i sit down. anything would be helpful

good posture is the best way to stretch your upper body, swimming and spine stretches would also help. yes it is true that the difference in upper body length isn't as great as leg length in men. How old are you?

Cycling/Sprinting/Hanging helps the legs.
Swimming/Hanging and upward stretches helps the spines.

A combination of these would make one a tall person Well, literally ...

i'm 17 turning 18 soon
i'm 5'8.5 and my goal is to be 6 feet haha
do u think there's still a chance for me lol

it also true that your upper body is the last to grow during puberty, it all depend on what stage of puberty you are in.

what if you was in 4.7 theyoungweatherman?

I'd estimate there is still an inch or two of spine growth left, but thats just an estimate, there is way too many factors to consider.