Probably, but just like the cold where it is easier to take layers off than it is to run back to the house and put them on, it is better to be overhydrated than it is to be underhydrated. Case in point Lance's dismal showing at stage whatever last year where he bombed the TT. There is probably a happy medium where they could go the whole stage without stopping, but I imagine that would be a fine balance point between hydrated and dehydrated. Just my thoughts.