Treating and Preventing Muscle Cramps during Exercise

How many of you watched the interview with Rafael Nadal after his U.S. Open win as he slid onto the floor grimacing in pain from severe muscle cramps?  The good news is he was fine after receiving fluids and doing some stretching. But this is something everyone should read up on in the event you or someone you know has an experience like this.  I found this good article on Sportsmd that covers this subject quite well.  Here's the link to that page:http://www.sportsmd.com/SportsMD_Articles/id/369.aspx    Enjoy.