If the organ doesn't get time to clean itself at night, it'll find (often inconvenient) time during the day.

The curious minds at What If examine the extreme consequences of staying awake for an entire week without sleep, revealing how your mind and body would deteriorate under total exhaustion.

Power outages and prolonged exposure to frigid temperatures carry a risk of hypothermia that cannot be ignored.

Being a night owl can be bad for your heart. That may sound surprising but a large study found people who are more active ...