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Humans should urinate at least four to six times a day, but occasionally, the pressures of modern life force us to clench and hold it in. How bad is this habit, and how long can our bodies withstand it? Heba Shaheed takes us inside the bladder to find out.

Lesson by Heba Shaheed, animation by Artrak Studio.

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What Your Poop Says About You (For Serious)

Download my FREE guide on how to have your BEST POOP EVER: Companion video: How To Have A Great Poop: