Add Yahoo as a preferred source to see more of our stories on Google. Answering an email or text may seem simple enough, but sometimes this simple act can elicit a seemingly dramatic bodily response: ...

Think you can beat the current world record? Before you try, here's what happens when you hold your breath.

Extreme breath-holding pushes the human body into survival mode. As oxygen levels drop, the brain and nervous system begin fighting back. This video breaks down what’s happening inside the body, why ...