When you’re on your way out to run a bunch of errands, you might use the restroom before you leave the house—you know, just in case. You probably also pee just before boarding a flight or heading into ...

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If you’re pressed for time, or just a well-hydrated person who pees a lot, you might be tempted to hold all that liquid in for a while—and then beam it out fast when you finally hit the toilet. But ...