the so called sports drinks do not have proper quantities of electrolytes in them-- I just buy Pedialyte from the baby aisle at the supermarket and that has the physiological sugar and electrolyte balance appropriate for replacement - babies have same electrolyte quantities as we do. Plus is quite cheap and often on 2 for 1 special at the supermarket-- I have out i bottle water and i bottle Pedialyte on my bike here in Orlando and no probs with cramps or stuff since.

batsheva