A doctor has revealed the horrific effects that staying awake for upwards of 24 hours can have on your body. We've all pulled ...

Sleep feels like a waste of time — but what if you could skip it? This video explores the real science of extreme wakefulness ...

It typically happens to babies and young children: They become "overtired" and can't sleep, often because they've been awake too long. But adults can become overtired too, robbing them of longed ...