text: what ways can i strengthen my arm for throwing? baseball start out lifting small weight, as curls and also doing push ups. my son began with 2 push ups a few months ago. but he was consistent. now he does many and is much stronger! i used to throw to him and i am his mom! i cannot do as well, but i keep lifting weights gradually and doing arm exercises.... also, keep practicing throwing, as well as lifting either your body weight or weights.... i hope this is helpful.