I'll lose about 5 lbs or more when taking longer rides in the 50 to 100+ mile range. I'm drinking water & sports drinks often. I'll eat a little while riding, about a 1/2 banana every hour.
When I get home, I'll see a sizable weight loss. After a normal meal and plenty of fluids my weight return to normal the next morning.
I finish these rides feeling well and able to ride further. Why the big weight loss? Is it unsafe dehydration or what?