(CBS News) The body has a few functions that could be dubbed "natural pranks." (Many of which are a bit juvenile, tend to be smelly and would never be highlighted here.) Among those functions would ...

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This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Roman Atwood discovers a universal prank, ...

Ever wonder why we yawn when we see someone else do it? Discover the science behind yawning and understand why it's so contagious. Yawning is an involuntary reflex that involves opening the mouth, ...

There is something you do when you’re tired, aroused, bored, or even hungry, but nobody completely understands why. Get your mind out of the gutter, I’m talking about yawning. We do it every day, ...

The average adult yawns about 20 times a day. But why? Surely we can’t all be that tired. The truth is, the science behind yawning is more complex than just a few hours too little sleep. Even more ...