Sleep starts when brain cells sense energy overload and release stress signals to protect themselves from harm.

New research suggests a link between REM sleep and Alzheimer's disease. Delayed REM sleep may indicate higher levels of ...

A new study reveals that waking up tired might be less about sleep duration and more about how the brain reactivates.

Certain patterns of brain activity during awakening correlate with a lower likelihood of the bleary-eyed state called ‘sleep ...

Sleep and brain experts respond to new findings on the association between REM sleep and Alzheimer's disease, recommending ...

A new study suggests that certain brain activity patterns may be linked to feeling less groggy in the morning.

And now, a study published in Communications Biology has found that caffeine, found in tea and coffee, could lead to some brain changes during sleep – especially during sleep outside of the rapid eye ...

The brain remains highly active during sleep, and mapping this activity can reveal early signs of neurological and sleep ...

The study, led by Dr. Gawon Cho from Yale School of Medicine, shows that poor sleep quality might be linked to long-term ...

These findings show that screen time itself isn’t the only issue. Its effects on sleep and brain development may drive ...

Each morning, your brain undergoes a precise sequence to shift from sleep to wakefulness, reorienting you to the world.