In the August issue of CyclingPlus there is an article about hyperhydration using glycerol. It sounds pretty intense. Remember to drink lots of water the day BEFORE you ride, and two hours BEFORE you climb onto the bike. If you wait until your thirsty to take a drink, it's too late. I drink close to two gallons aday, every day. And go to the restroom incessantly. Likewise, when I ride I am having to go alot, yet I don't drink near as much as my partner. He has a CamelBack,which he replenishes frequently, and I carry 2 bottles that can last me 4 hours. By the way, I LOL at the English magazine's warnings about riding in the heat which they define as above 75 degrees F!! That's the overnite low here in Texas....:dance: