daylight saving time

Sleepwalkers aren’t soulless, they’re just unconscious. If you do happen upon someone experiencing somnambulism, what should you do?

People who don't get enough sleep for several days in a row can't rely on caffeine to give them a mental boost, new research finds.

When it's time for kids to go back to school, what time should they go back to bed?

For some animals, hunkering down in a cozy den when nights are long and temperatures are low is not just a matter of temporary comfort — it's necessary for survival.

There are five key habits that researchers have definitively linked with better health and a longer life. But few people are doing them.

Is dieting really the devil?

Dreaming dragons? Researchers have discovered REM and slow-wave sleep in lizards for the first time.

In a recent study, scientists discovered an unexpected consequence to sustaining a serious brain injury.