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Man struggles to sleep

Health

One bad night’s sleep may increase Alzheimer’s protein in your body

It only takes one sleepless night to raise levels of a protein linked with Alzheimer’s disease in young men’s blood, but the long-term effects are unclear

News

Breathing exercise Pranayama

Health

How to breathe your way to better memory and sleep

Features

Light therapy device helps improve some symptoms of dementia

Health

Light therapy device helps improve some symptoms of dementia

News

Chasing the sun: How light and dark shape our bodies and minds

Video

Chasing the sun: How light and dark shape our bodies and minds

Video

Rowan Hooper interviews super humans at New Ů��С��Ƶ Live

Video

How to be superhuman: The science behind extraordinary abilities

Video

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Technology

Non-stop nightmare: Disturbing show weighs the impact of a 24/7 world

Culture

Oxygenated blood (red) in a sleeping brain

Mind

A type of brainwave may help clean your brain while you sleep

News

man sleeping

Health

A second mutation that makes people need less sleep has been found

News

Your genes help determine how much sleep you need

Health

DNA mutation lets some people live healthily on only 4 hours' sleep

News

Question

How much sleep do I need?

Most adults need a recommended 7 to 9 hours a night, according to the US National Sleep Foundation.

Health

People with narcolepsy may be more creative because of how they sleep

News

Definition

How much sleep do you need?

Health

How getting more daylight can improve your mental and physical health

Features

Health

Even dim candlelight before bed is bright enough to disrupt sleep

News