Here’s what sleep scientists and doctors say about how much you really need — and whether your gender plays a role. Sleep ...

Daylight saving time ends at 2 a.m. on November 2, giving Americans an extra hour of sleep but earlier sunsets. A study shows sleep duration and bedtime vary by state. Experts say seven to nine hours ...

Here's how much sleep you really need, based on your age. Sleep is crucial for health; adults generally need 7-9 hours each night for optimal functioning. Sleep requirements vary with age; for ...

Few experiences rival the calm satisfaction of falling asleep easily and waking up feeling fully rested. But sleep is more than a luxury or idle downtime, it’s a vital biological process that supports ...

For something that takes up close to one third of our lives, sleep is surprisingly confusing.We’re told to get eight hours, ...

We’re told that sleep is a superpower, making us smarter, healthier and happier. But how much is enough? And is insomnia as bad for us as we think?

It can be tough to calculate exactly how long you’re in REM, but many health trackers use your heart rate, heart rate variability, and data on your movements to make solid estimations. (Just know that ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why do I need to sleep for a long time at night?