during REM sleep, your brain waves are similar to those when you are awake as your brain is more active.” How to get more REM ...

But if you’re consistently sleeping under 7 hours a night, feeling tired during the day and getting more irritable, it’s likely you need more sleep. And there are far more effective ways to ...

"We're trying to again make a normal sleep cycle more efficient so that we are able to get all of the benefits from both parts of sleep every night," he recently told BI, referring to the ...