Weight gain problem?

[Zackk]

I'm 15 almost 16 in April

and im 5' 8'' and weighing only 100pounds

i eat at least 2100 calories a day.

how can i gain weight?

[Aspiringanonymous]

Boys' Puberty :arrow: VT General Hospital

[Hollywood]

i have the same problem. im 6'0" and 110lbs. i dont really know what to tell ya.