During sleep, the body goes through multiple sleep cycles. Each cycle consists of four stages: three stages of non-rapid eye movement (non-REM) sleep and one stage of rapid eye movement (REM) sleep. A ...

During REM sleep, your heart rate increases, your blood pressure elevates, and your eyes move. REM sleep may also be the time when your brain processes emotions and solidifies memories. Your body ...

A 2021 phone poll revealed that only 34% of Americans "sometimes" remember their dreams. About 1 in 10 say they "almost always" can, and the same percentage say they "never" do. Explanations for such ...

REM stands for rapid eye movement — a stage in the sleep cycle when your brain is almost as active as when you’re awake. Getting enough REM sleep is crucial, as it helps you store information and ...

Dreaming, memory-making, problem-solving: A lot happens during the most active sleep phase By Carolyn Todd Any sleep tracker will show you that slumber is far from a passive affair. And no stage of ...

REM may be the most talked-about part of the sleep cycle, but getting enough of it can still be an elusive quest. You might know by now that it’s important, but maybe you don’t know exactly why or how ...

image: Study by Brazilian and South African researchers is the first to prove, using a graph analysis tool, that REM dream narratives tend to be more complex and connected than reports of non-REM ...

There are tell-tale signs when you don’t get enough REM sleep. It’s the fourth stage of sleep and it’s crucial for processing ...

A new study by an interdisciplinary team of researchers at The University of Texas at Austin provides what may be the most reliable validation to date of the connection between physical activity, ...

As much as half of the global population has trouble sleeping; however, proper sleep is vital for good overall health. While using caffeine for energy during the day can help, it may lead to further ...

Scientists have recently shown that both the quality and the amount of sleep we get may influence our risk of developing Alzheimer’s disease. Now, a study suggests that people who take significantly ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Need another reason to prioritize your sleep ...