Anything with grip strength. Work on the forearms and biceps. Basically anything above the waist is good for your hands. However, do not try to focus on only t

Anything with grip strength. Work on the forearms and biceps. Basically anything above the waist is good for your hands. However, do not try to focus on only the hands. The human body is a big bundle of sticks and elastic see-saws. It a very real way (as hippy dippy as it sounds) the human body is all one-thingness. Do: Pushups, all kinds. Pullups, all kinds. Punches, presses, windmills, do it all. Have a 15 minute daily exercise routine before breakfast. Make it up yourself. If you have room to turn around you have enough room to exercize. There's tons of body weight exercizes to find online for free. This is your body. No amount of money can get you a new one or improve the one you have. The only way to get better is discipline and consistent effort. Just 15 minutes a day, I swear.