Add Yahoo as a preferred source to see more of our stories on Google. Person wearing a wearable sleep tracker in bed Light sleep is the beginning of your sleep cycle and your body's way of winding ...

This sleep stage is incredibly important.

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 ...

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 ...

You did it! You finally won the lottery, and you're making plans to spend all that cash ... but then you're startled awake by your alarm clock. It was just a dream (sigh). Whether or not you remember ...

Some people are naturally better at recalling their dreams. Others worry they’re not getting quality sleep if they can’t ...

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 ...

Sleep Stop waking up at 3 am — I asked 5 doctors for their best sleep hygiene tips and here’s what they said Sleep Science says the '60-minute bedtime rule' is crucial for longevity — here's why and ...

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 ...

All the most commonly prescribed drugs for mental and emotional disorders affect dreams—typically via their effects on REM sleep. Under healthy conditions REM sleep ‘turns on' when activity levels of ...

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 ...

Quality sleep is critical for people living with epilepsy to avoid triggering seizures. Poor sleep can affect seizures, memory, and more.