my rule of thumb iis deink on the 15 and eat on the half hour which means that I used to have the timer on my watch set for fifteen minutes and alternated eating and drinking. Nowadays I go more by feel but it still seems to be 3 or 4 times an hour.

If you are feeling hungry or your mouth is dry, you are too late so try to anticipate. Hydration is a self correcting weight- wht you don't sweat off you willl pee out.

marni