This is a good video about the importance of movement. Mainly, a wide variety of movement to keep your body functioning well. After having TOS for more than 30 years, a lot of this stuff seems impossible to me, but I think doing the same things, over and over, is a big cause of TOS. He points out that if you specialize in what you're doing too much, you will pay a price.

http://www.youtube.com/watch?v=hb7GjomO7Ns