View full lesson: http://ed.ted.com/lessons/is-it-bad-to-hold-your-pee-heba-shaheed
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.