text: 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....\nAlso, keep practicing throwing, as well as lifting either your body weight or weights....\nI hope this is helpful.