I don't know about this one.
Carlos Zambrano of the Chicago Cubs has been asked to scale back his computer usage because the Cubs think that he's possibly developed Carpal Tunnel Syndrome. Who am I to argue with the Cubs medical staff? But, I'm sure I use computers more than Zambrano does and I used to find that throwing a baseball was great relief for the kind of trouble that can come from excessive use of a keyboard & mouse.
Maybe Zambrano's problems are caused by his computer use, but maybe, just maybe, they're caused by his manager over-using him.