Medically reviewed by Sohaib Imtiaz, MD Key Takeaways Deep sleep is essential for health, making up 20% to 25% of total sleep time.Not getting enough deep sleep can raise the risk of problems like ...

How much sleep do you actually need to live longer? New 2026 research has answers and they might surprise you.

Sleep is more than a sweet escape or rare reward to enjoy when you’re lucky. Sufficient sleep is vital to nearly every facet of overall health. While sleep still remains a relatively mysterious ...

New research says sleep is the second biggest factor in how long you live. Here's what the science actually means for you.

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?

Though it might seem like the question "How much sleep do you need" gets a new answer every other week, the The National Sleep Foundation says its new chart breaks the question down like never before.

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 ...

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 ...

The question of how much sleep children need is one that is not easy to answer. Professional organizations have recommended guidelines which include ranges for different age groups. For example, the ...