Lately, I’ve been waking up every night in the middle of the night like clockwork. It’s a bit of a mystery as to why: I haven’t been feeling particularly stressed about anything—not work, not my ...

Everyone needs 6 to 8 hours of sleep every day. A good, complete sleep refreshes us and makes us feel energetic throughout ...

As a young physician in Sydney, Australia in 1979, Colin Sullivan conceived of an experiment to help people with nighttime breathing issues. After several months of waiting for the right patient, he ...

Have you ever slept a full eight hours but awakened feeling as tired as if you had pulled an all-nighter? If so, you may have experienced what’s known as unrefreshing sleep. Unrefreshing sleep, also ...

Lately, I’ve been waking up every night in the middle of the night like clockwork. It’s a bit of a mystery as to why: I haven’t been feeling particularly stressed about anything—not work, not my ...