Past age 50, men are much more likely to have REM sleep behavior disorder than women. Jose Luis Pelaez/Stone via Getty Images Every night, you go through four to five sleep cycles. Each cycle, lasting ...

Recent reporting reveals that REM sleep may fundamentally alter how memories are formed and recalled. During rapid eye movement stages, the brain actively reorganizes neural pathways to refine what we ...

A new study has found a link between rapid eye movement (REM) sleep and Alzheimer’s disease. The research from China, published in the journal Alzheimer’s & Dementia by the Alzheimer’s Association, ...

ATS 2025, San Francisco – During REM sleep, the body enters a state of paralysis. This can pose a danger for patients with weakened diaphragms due to neuromuscular diseases. Now new research published ...

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 ...

Everything you need to know about REM sleep, including what it is and how much you need ...

Obstructive sleep apnea, a condition that causes lower oxygen levels during sleep, is linked to degeneration of brain regions associated with memory through damage to the brain's small blood vessels, ...

Success isn’t just about strategy and execution — quality sleep fuels energy, decision-making and emotional stability. These six simple sleep habits will help you perform at your best every day.