Have you seen The Anatomy Coloring Book ? It is authored by Kapit and Elson and is in its 4th printing. It has just about anything you wanted to know about human anatomy. I bought one and a box of colored pencils. It has some good information about the joints, muscles and all that other stuff inside you. Benefits: you can learn just where the mischief is taking place in your body you can exercise your fingers and hands(use a pencil gripper, not the one at Walmart, the lovely ones on Amazon.) you can also check out the location of your spleen and a few of the other mysterious organs that you have wondered about. you can have fun and improve your brain cells all at the same time. It can be a long term project. Most importantly, you can indulge your creative soul and have fun with the childhood pastime of coloring.