Does bodybuilding stunt growth ? some say squats etc. do that. and is it ok if i workout at the age of 16

Exercise ok: Exercise will not stunt growth. Steroids will. It is more than okay to work out at 16.

Not really: Weightlifting like many sports activities can be beneficial if done right & can produce significant injury if done wrong. Anyone should be taught by a trained professional, preferably one certified in the area.Early training focuses on technique & low intensity weights. Power lifting & body building are not recommended until the kid reaches skeletal maturity (final height, b.O., shaves).