We may think we have more control over our sleep than ever. Sleep trackers tell us how long we are spending in every sleep stage. There’s an ever-increasing amount of tech to help us sleep deeper and ...

You can monitor several key health metrics over time right from your wrist. Here's how to interpret data on a fitness tracker ...

Deep sleep doesn't just rejuvenate your body — it clears your mind by flushing out waste that builds up during waking hours.

This phenomenon prevents the more refreshing stages of deep sleep. For more on improving sleep, see How to Sleep Better. What is the purpose of dreams? Researchers still aren’t entirely sure ...

We round up some of the best sleep trackers that you can buy right now Shutterstock Sleep tracking is serious business.

(Program not available for streaming.) What are dreams and why do we have them? NOVA joins leading dream researchers as they embark on a variety of neurological and psychological experiments to ...

Among the vital necessities of life, the need for shelter seems to make the biggest impact on our dreaming experience.

A good night's sleep clears the mind like a "dishwasher" cleans crockery, new research suggests. Deep sleep may wash away ...

Restorative sleep refers to time spent in the deep and rapid eye movement stages, which are extremely important phases of sleep. Generally, the optimal amount of time for adults to spend in ...

This is the stage before you enter deep sleep. The final stage of non-REM sleep ... Stage R is typically when you dream. You may likely experience: rapid eye movements behind your closed eyelids ...

On average, you have between one to six dreams a night, the strongest occurring during REM sleep. Nobody remembers all the dreams they have, but if you've ever woken from a particularly unsettling ...

What are the functions, then, or the benefits of dreaming? Well we know that dream sleep, which principally comes from a stage that we call rapid eye movement sleep or REM sleep, dream sleep ...