Did you know that when you flush the toilet, down goes about five gallons of water? Yep, that’s quite a waste, so to conserve that precious fluid (the water, not your pee), go ahead and squirt in the shower. You think that’s disgusting? Not hardly. Urine is sterile and nontoxic, and it can even help cure athlete’s foot. See all that dirty water going down the drain? It might as well have a little pee mixed in so you don’t have to flush even more after you dry off.