Hydration tips for training

http://coachjoeenglish.wordpress.com/2007/07/27/training-ten-things-you-need-to-know-about-hydration/

http://www.runningnetwork.com/trainingtips/rrcahotweatherJune06.html 

http://www.allaboutrunning.net/sri-chinmoy-racesblog/drinking-during-running 

http://www.runningplanet.com/training/hydration-running.html