Early research suggested that it can help people fall asleep and relieve anxiety. One study using binaural beats at a frequency of 3 Hz induced delta brainwaves, which lengthened stage three sleep, or ...

Loneliness searches increasingly come from people who are socially active rather than isolated. They report full calendars, ...

Have you ever jolted awake in the middle of the night, heart racing, drenched in sweat, with no memory of what happened?

Forget the "get ripped quick" myths—discover the realistic timeline for sustainable muscle growth and why adding five pounds ...

Alcohol increases urine output, leading to dehydration and electrolyte loss. It also inflames the stomach lining, disrupts ...

This story appears in the June 2013 issue of National Geographic magazine. The village chief, a wispy fellow with an easy smile and snowy muttonchops, came aboard James Cameron’s expedition ship in ...