can't stress this enough please take care of your hands and wrists. get a small weight, stretch often, take breaks, massage, wear a brace, ergonomic mouse.
that shit is not a joke and it will happen to you.
Due to his hand and wrist pain, Toby doesn't actually program anything anymore, and instead has his team do it for him. However sometimes he will get on call with one of them to tell them exactly what to do. (Picture from Debug Magazine issue 10)