I am 15 and will turn 16 in two months. I am 5'2" and I'm much shorter than all of the relatives. However everyone on my paternal side is about my height or shorter. My mum is 5'4" and my Dad is 5'7". I have started doing aerobics for 1 hour every day. I'm not sure what kind of aerobics its called, but it involve a lot of stretching of the arms and calves and things like that. Do you think I can expect to reasonably gain some height and maybe lose some wight as well. Do I still have time to grow and if so, how much? How do I know if my bones are still "grow-able"? I'll probably do aerobics for a year or so.
Aerobics won't make you taller, however at age 15/16 you are still growing. Girls are still growing until around 18 and boys i believe is early 20's. it's hard to say how much more you will grow and when, as everyone is different.
A combination of eating a good diet and exercise will help you lose weight.
Will aerobics make you taller? No, it won't. It'll strengthen your heart and lungs; it'll also tone your body and increase your energy. But it will not make you taller.
As for losing weight, ditch fatty food, eat more nutritious meals and exercise regularly. You still have a natural metabolism that should make weight-loss easier for you.
I actually found some sources that corroborate the above theory about people performing certain sports growing taller than average (this) and this. If a legitimate source is found, the answer will be updated with it.
I can't make any claims to having tried this for growing taller, but I wish I had known this information when I was younger.
Interval training has been found to increase human growth hormone by a significant amount. (1)
Growth hormone is sometimes given to kids to help them grow taller. (2)
You can draw possible conclusions from there.
Personally, I would not recommend increasing HGH levels synthetically.