One in five adults pee in the pool. Welcome to summertime! How would you ever know? Check your eyes… it turns out that red eyes in the pool are associated with chloramine, a chemical created when urine combines with the chlorine that’s already in the pool. Oh, and it gets better, the study also found that 70% of us don’t shower before entering a pool, which spreads many diseases (according to the CDC). A quick 30 second shower will remove dirt, sweat and sunscreen before entering the pool.