Originally Posted by
droppedandlost
Certainly water too, but I was referring to salt/electrolytes. Years ago, I got back from a 30 mile ride and my wife asked why I wore so much sun screen. I didn't have any on, it was a layer of salt on my face. The point is simply that the nutrition side of things will keep you going for a longer period.
I sweat a ton, and lose a lot of salt. I recently stocked up on Nuun tablets to help a bit.