machanla man gym yana kiyala hithan inne......mata thama 17i.....adu wayasen gym gihama usa adu wena wa kiyane atha da...mage usa 5.2 mita wada usa adu wei da................
usa adu wenne na bn, e kammaliyo thamange wasiyata hadagaththa gon katha. wayase mona hari effect ekak thiyenawada kiyala kiyana nm danne na eth eka doctor kenekgen ahala danaganna eka godak hondai kiyala hithanawa mehema forms walata awith ahanawata wada.
It could shorten the bone length machang. That happens even when a grown up starts lifting heavy weights. Until you are like 25 your bones still have cartilages. Its softer than the hard bones. I wouldn't recommend a youngster to start lifting weights. But certainly he can build muscle strength by other means.
Unless you are 20 don't think about body building. Build you cardio capacity. Stamina.