The muscles in my neck and shoulders tie themselves in knots. When they do this, I have problems with my hands. Massage therapy makes the knots go away, and my hands are happy.
Oh, my special hand therapy from when I broke my arm. Hold a good read in one hand, and a set of chiming balls in the other. Manipulate the chiming balls while enjoying your good read. It gives you an excuse to read longer than you should. It also seems to help.