Drinking water supports heart health, digestion, and skin hydration. Most people can survive about three days without water.

Whether you’re planning an all-nighter or dealing with insomnia, read on to learn how your body will handle sleepless days and nights. Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds ...

Staying awake for 24 hours can impair your cognitive function, similar to being over the DUI limit. Your risk of heart disease, depression, and obesity increases if you have chronic sleep deprivation.