Sometimes, when I’m on the treadmill at the gym, I have to pee. whenever this happens, it’s always at the begining of the run and I’m annoyed because I either have to stop running or put up with having to pee for the rest of the run. I try to convince myself that if I run long enough, I’ll sweat so much that I won’t have to go anymore.
Is that even possible? When the bladder fills up, does the urine have only the one exit, or does the body reclaim some of the water in times of need?