I wont repeat what is already said,but your body will change a bit still,i was 6'4" at 19 yrs,about 190 then,i am 29 now,still 6'4" but weigh a lean 215,got up to 230 3 years back,but belly got big too,cut back to 215 perfect,just keep eating good and lifting,your metabolism WILL slow down in a few years....as a tall guy especially,keep your waste slim though to look bigger up top,(keep this in mind 5 years from now)