Originally Posted by
GhostRider62
Weigh yourself before and after a long ride. If you hydrated and fueled well, you might have lost 1% but not more than 2% body weight. Eventually you'll learn your needs. (you will inevitably have some glycogen depletion and the water associated with it, so, some weight loss is normal. Weight gain is a big issue though)
I've never stripped down and weight myself after a ride, nekkid and w/o rehydration and refueling. Drinking a quart of restorative is the first thing I do. However the next morning I'll be light if that was a tough ride. It'll take me a couple days to put the glycogen and water back.