Martial arts can still be cool and the pictures are picked up by the mind. You might try that for the sake of improving the moves. Picking up tips and the practice of photoreading books with pictures is good too. You'll find graphs diagrams and photos less distracting in other books when they do pop up.
Biologyand even computer books are fine too. Just set yourself a sound purpose 
Something along the lines of I want to understand more about... [pick something you noticed in the preview or postview]. Then think of a couple of questions you would ask the author about that aspect of the subject.
Alex
