Read more: How to Use a Sleep Tracker to Improve Your Sleep Tonight. If you're interested in sleep data though, understanding and correlating how you feel with how well you progress through the sleep stages can help you make informed decisions about your bedroom environment or schedule. In fact, I encourage you to do that, especially if large amounts of data about your body doesn't ease your mind. Your brain waves in REM sleep are closer to wakefulness than deep sleep, and your breathing becomes irregular and speeds up. Sure, you could do just as hundreds of generations of humans before us did and fall asleep without any sleep trackers and trust Mother Nature. Deep sleep is often confused with REM sleep, but the two are actually very different. It's not surprising that with so much near-wakefulness, this stage is when most of your dreaming occurs.įun fact: In REM sleep, your arm and leg muscles are temporarily paralyzed by two chemicals in your brain that prevent you from physically acting out your dreams and punching your partner in the face instead of that alien bad guy. Blood pressure and heart rates also increase to near awake levels in REM sleep. Your brain waves in REM sleep are closer to wakefulness than deep sleep, and your breathing becomes irregular and speeds up. REM sleep, the stage that’s particularly important for mental and emotional restoration, also generally declines with age. If you've ever caught your dog or cat in a REM stage, you'll recognize the darting eyes. By their early 70s, time in deep sleep may be as little as 5 percent. This is the sleep stage in which your eyes move rapidly. REM sleep goes even deeper into brain recovery, dreaming and processing memories and emotions.
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