Quote Originally Posted by OakLeaf View Post
There are a lot of things that might cause it, but if it only happens on long rides, I'd guess you aren't getting enough electrolytes. The more plain water you drink, the more your kidneys try to rid themselves of it to keep adequate electrolytes in your blood.

Do you use a sports drink, Endurolytes or similar - or make sure to eat plenty of salty snacks - when you're on long rides?
I guess I never really thought about electrolytes being an issue. I do drink lots of water, I would probably say I drink at least 1 1/2 bottle to 2 bottles on a 30 + mile ride, the hottier is the more I drink. I am sure there have been times when I have not drank enough.

I use electrolyte drops, and add them to whatever sports drink I am drinking (heed, or gaterade), if I am not drinking a sports drink I will just add it to my water.

I know throughout the day I do not drink the proper amount of water, I'd say I proably average 2 cups of coffee, 4 cups of water - on a good day.

I will try the salty snacks.