Originally Posted by
TromboneAl
My real question was: "Can I rehydrate by drinking a lot of water at once after a ride?" and the answer seems to be "no."
That is consistent with my experience. A ride 2 weeks ago I didn't drink enough, only (4) 750ml bottles on a 4 hour ride with temperatures in the 80's and 90's. It took 7 hours after the ride before I began to feel back to normal, and couldn't drink enough, waking up several times through the night to drink more. Sure don't like that feeling.