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Could holding your pee for a long time have serious consequences? Find out if holding your pee too long can cause your bladder to rupture.

What was the first circus? Learn how circuses got their start at HowStuffWorks.

Being healthy is about more than just being free of germs. Get some tips on how to maintain a healthy lifestyle -- from the inside out.

Headache exercises can help ease debilitating tension headaches. Learn about the source of this pain and headache exercises for relief.

Think you've got the right stuff to ace this boy band quiz? Take it and find out! We know you want it that way.

The belly button is pretty obvious on a human. But what about a dog? Do they have one and if so, where in the world is it? HowStuffWorks finds it.

Think you can tell the facts from myths of climate change? Find out with this HowStuffWorks quiz.

If your mucus went away, you'd be in trouble. Find out what mucus is made of and how mucus keeps you healthy.

Can you truly become physically dependent on chocolate? Find out if science supports the claims of chocolate addiction.

You're not some piddling mortal! You are a god! Well, a Norse god anyway. Which Norse god or goddess reflects your soul? Take this quiz to find out!

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