Get ready to be grossed out. When you emerge from the swimming pool with red, irritated eyes, it's way more than just chlorine that is causing all that itchiness. Actually, it's mostly pee, Women's Health reports.

"Chlorine binds with all the things it's trying to kill from your bodies, and it forms these chemical irritants," Michael J. Beach from the Centers for Disease Control told the magazine. "That's what's stinging your eyes. It's the chlorine binding to the urine and the sweat." Another bad side effect: When chlorine binds to these bodily fluids, it makes it less effective at keeping the pool clean. And that "blue dye" that supposedly exposes people peeing? It's not real.

Having the right pair of goggles that seal properly and are comfortable will provide maximum protection and allow for an enjoyable experience in the pool.

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On the CDC's Healthy Water website, they recommend you shower before you get in the water to stop the spread of germs, and never swallow pool water. If you have kids, make sure to take them out of the pool at least once every hour, and change diapers in a bathroom or area far away from the water.

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If you're concerned about the chlorine levels in your local public pool, you can also ask the pool staff about chlorine and pH levels, and about how often the facility gets cleaned and inspected.