+1. Building a little bit of hand/arm strength also isn't a bad idea for a computer profession, to help reduce the risk of RSI.
Are you trying to support the book completely with your hands? I do a lot of reading while laying down with the book on my stomach or sitting with the book on a table or propped up on my knees. The only time I'm holding the book in the air is when I'm walking or cycling.
I used to suffer from various small pains, even a Quake2 induced pain in the dorsal side of the hand, and they stopped when I started to use a bike and lift weights.
Are you trying to support the book completely with your hands? I do a lot of reading while laying down with the book on my stomach or sitting with the book on a table or propped up on my knees. The only time I'm holding the book in the air is when I'm walking or cycling.