Spending lower proportions of time in two deep sleep stages — including REM sleep — may be linked to volume changes in ...

As most people who have pulled an all-nighter will agree, lost sleep can leave us feeling foggy and far from our best. In ...

REM stages and one REM stage. Ideally, you repeatedly cycle through each stage. Learn how long each stage lasts.

Is sleep tracking actually useful in daily life, or is it just data overload distracting you from what matters? After ...

New research shows that reduced time in slow wave and REM sleep is associated with smaller brain volumes in regions ...

Deep sleep helps you to feel refreshed when you wake up and helps with sleep continuity.” Exercise during the day can help to regulate your sleep cycle and even boost melatonin production (yep ...

A good night's rest isn't just about waking up refreshed — it plays a critical part in preserving your mental sharpness as ...

But unlike humans, birds can sleep with one eye open, keeping one half of the brain somewhat alert while the other sleeps deeply. This balance between vigilance and deep sleep helps them stay ...

However, following the tips shared above and below can promote more restorative rest and help you get more deep sleep. “Get morning sunlight to help set your internal body clock,” Dr Dasgupta ...

The many reasons a person may sleepwalk include genetics, sleep deprivation, stress, migraines, fever, breathing disorders, ...

A study on birds finds that when jackdaws are sleep-deprived, they stop sleeping with one eye open and enter deeper sleep, risking safety.