Its there body type its all in the genetics. I myself am personally skinny I can't help that though because I was always tiny growing up. But I am sure it has something to do with how I was born. And plus I have a fast metabolism as well. I don't think being skinny is by choice, everyone's body is built differently. It may just be hard for him to put on weight because of his fast metabolism. As he gets older it should start to slow down.
Most Helpful Opinions
teenagers are either skinny fat or average. you dk a persons body type till their growing is done and settled, if he eats well and exercises its probably just his growth spurt.
It's both genetics and diet. Guys don't really fill in until 21ish and some beyond that. Also If he eats primarily an Asian diet he might also not grow as big.
What Girls & Guys Said
Opinion
0Opinion
The only opinion from guys was selected the Most Helpful Opinion, but you can still contribute by sharing an opinion!
Learn more
Most Helpful Opinions