And the substances in the pool that do cause your bloodshot eyes will probably make you a little seasick.
“Chlorine binds with all the things it’s trying to kill from your bodies, and it forms these chemical irritants. That’s what’s stinging your eyes. It’s the chlorine binding to the urine and sweat,” says the appropriately named Dr. Michael J. Beach, associate director of the CDC's Healthy Water program.
If that isn't enough to make you say "ewww," here's a report from 2012:
If you’re taking a refreshing dip in a pool with four other people, odds are one of you is urinating. This is not gross-out myth, but cold, depressing fact from a recent survey conducted by the Water Quality & Health Council, a scientific research group sponsored by the American Chemistry Council.
The survey, conducted in April, asked nearly 1,000 adults whether they urinate in pools. One in five bravely admitted their mistakes. And those are the ones who admitted it.
We may act like potty-trained adults on land, but something about a body of water, even a small one, opens our natural floodgates and, according to doctors, puts us all at risk…
