Smartwatch makers promise to turn your wrist into a sleep lab, translating tiny movements and heart rate blips into colorful ...

REIT holdings of the iShares Mortgage Real Estate Capped ETF benefited from lower funding costs in 2025. Read why REM is a ...

Light sleep is the beginning of your sleep cycle and your body's way of winding down. Breathing, heart rate and muscle changes prepare your body for the deeper sleep to come. Light sleep is broken ...

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 sleep -- the phase of night-time mammalian sleep physiology where dreams occur -- has long fascinated scientists, clinicians, philosophers, and artists alike, but the identity of the neurons that ...

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 ...

We know how, but not why, the brain is activated in sleep. I suggest that brain activation in sleep allows the development and maintenance of circuits necessary for higher brain functions, including ...

If you've ever seen a close-up photo of a jumping spider, you'll know they're the cute ones. Many fit on the tip of a finger and sport fuzzy, colorful bodies and big eyes. They're quite amazing, said ...