https://www.sleepfoundation.org/stages-of-sleep/rem-sleep
REM sleep is a stage of sleep associated with dreaming, memory, and brain development. Learn what happens during REM sleep, why it's important, and how much you need each night.

https://www.healthline.com/health/how-much-deep-sleep-do-you-need
Learn about the stages of sleep, what deep sleep is, and how much you need for your health and wellbeing. Find out how to increase your deep sleep, what happens if you don't get enough, and how it differs from REM sleep.

https://my.clevelandclinic.org/health/body/12148-sleep-basics
Learn about the different stages of sleep, including REM and NREM, and how they affect your health and well-being. Find out how much sleep you need, why you need it and what happens when you don't get enough.

https://www.verywellhealth.com/the-four-stages-of-sleep-2795920
As your body progresses through the four sleep cycle stages—stages 1 through 3 (non-rapid eye movement, or NREM) and stage 4 (rapid eye movement, or REM), it transitions through different biological processes that affect your temperature, breathing, cells, and muscles. All the while, your brain is busy forming, organizing, and storing memories.

https://en.wikipedia.org/wiki/Rapid_eye_movement_sleep
Rapid eye movement sleep ( REM sleep or REMS) is a unique phase of sleep in mammals (including humans) and birds, characterized by random rapid movement of the eyes, accompanied by low muscle tone throughout the body, and the propensity of the sleeper to dream vividly. The REM phase is also known as paradoxical sleep ( PS) and sometimes

https://www.healthcentral.com/sleep/rem-sleep
During REM sleep, which "involves the lower brain centers—the brainstem and the thalamus—connecting up with the higher cortex," your brain waves become fast and shallow. In fact, EEG scans

https://www.sleepfoundation.org/stages-of-sleep/how-to-get-more-rem-sleep
Learn why REM sleep is important for memory, learning, and emotional processing, and how to increase your REM sleep with sleep hygiene, medication, and treatment. Find out how much REM sleep you need and what can disrupt it.

https://www.thensf.org/what-is-rem-sleep/
REM sleep is a stage of sleep where your eyes move rapidly and you dream. It is important for memory, mental focus, and mood. Learn how to improve your REM sleep and why it matters for your health.

https://sleepdoctor.com/stages-of-sleep/rem-sleep/
REM sleep is a stage of sleep characterized by rapid eye movements, brain activity, and dreaming. Learn how REM sleep affects learning, memory, emotions, and brain development, and what happens if you don't get enough of it.

https://www.webmd.com/sleep-disorders/sleep-101
Learn how your body cycles between REM and non-REM sleep, and what happens in each stage. Find out how REM sleep affects your brain, dreams, and aging.

https://www.sleepfoundation.org/stages-of-sleep
Learn about the four sleep stages, including REM sleep, and how they affect your health and well-being. Find out how sleep cycles change over the night and what factors can disrupt them.

https://www.mayoclinic.org/diseases-conditions/rem-sleep-behavior-disorder/symptoms-causes/syc-20352920
Learn about the symptoms, causes and complications of REM sleep behavior disorder, a condition that causes you to act out your dreams during sleep. Find out how to diagnose and treat this disorder and when to see a doctor.

https://www.ncbi.nlm.nih.gov/books/NBK531454/
Sleep exists as two distinct types: rapid eye movement (REM) sleep and non-rapid eye movement (NREM) sleep. [2] [3] The hallmark of sleep physiology is the sleep-wake cycle in which a person vacillates between NREM and REM sleep throughout the night. The switches between NREM and REM sleep are controlled by reciprocal inhibition of

https://www.healthline.com/health/sleep/dream-cycle
Learn about the different stages of sleep, including REM and NREM, and how dreams mostly occur during REM sleep. Find out how to increase your chances of having lucid dreams and how to wake yourself up from them.

https://www.verywellhealth.com/what-is-rem-sleep-5085353
REM sleep is an important part of a normal night of sleep. It may provide the pleasure of recalled dreams. When there are problems with its regulation or its effects, it may be associated with other sleep disorders, including narcolepsy, REM sleep behavior disorder, and even sleep apnea.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6986372/
REM sleep is many things. It is a behavioral state, a brain state, a dream state, and a paradoxical state. It is produced by complex and anatomically distributed neural circuits that give rise to a variety of individual components: muscle paralysis, rapid eye movements, an activated cerebral cortex, and so on.

https://health.clevelandclinic.org/your-complete-guide-to-sleep
REM Sleep. You dream during this stage. Your brain activity greatly increases and can even match or exceed your usual brain activity when you are awake. Your muscles enter a state of temporary

https://www.healthline.com/health/healthy-sleep/how-to-get-more-rem-sleep
Learn how to improve your REM sleep with lifestyle changes, such as following a sleep schedule, exercising, and meditating. Also, find out when to seek medical help and what medications and supplements may be useful for sleep disorders.

https://www.sleep-science.org/rem-sleep/
Learn what REM sleep is, why it is important, and what problems may occur during this stage. REM sleep is the stage of dreaming, paradoxical sleep, and emotional healing.

https://www.nytimes.com/2023/02/25/well/mind/rem-sleep-benefits.html
Dysregulated REM sleep is also linked with cognitive and mental health issues, like slower thinking and depression, said Dr. Ana Krieger, medical director of the Center for Sleep Medicine at Weill

https://www.medicalnewstoday.com/articles/247927
REM sleep is a stage of sleep in which the eyes move rapidly and dreams occur. It may benefit learning, memory, and mood, but alcohol can disrupt it. Learn more about REM sleep, its stages, disorders, and how to improve it.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5846126/
REM sleep facilitates learning and memory by regulating neuronal synapses. A schematic diagram demonstrating that REM sleep strengthens persistent new spines induced by motor learning and facilitates long-term maintenance of synapses. (A) REM sleep prunes newly formed postsynaptic dendritic spines (yellow circles) of pyramidal neurons in the

https://www.verywellmind.com/understanding-dreams-2224258
REM sleep is the stage of sleep when dreams occur and the brain is active. Learn about the signs, functions, and benefits of REM sleep, as well as how to improve it and what happens when it is disrupted.