The Pee In Pools Is What's Making Your Eyes Red

06/25/2015 01:19 EDT | Updated 06/25/2015 01:59 EDT

If this doesn't make you hold in your pee until you're done swimming, we aren't sure what will.

In an interview with Women's Health, a CDC official confirmed that it's not the chlorine in pools that's bothering your eyes — it's other people's urine that's bonding with the chemicals and affecting your vision, and potentially your lungs.

So on that note, we'll just quote a backyard sign that's been a favourite for years: "Welcome to our Ool. Notice there's no P in it. Please keep it that way."

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