If you need, you can always set a secondary, appropriately loud alarm for a couple minutes later to make sure you don't oversleep. Somers: Sleep is very much a multidisciplinary specialty for good reason because sleep affects all the organs of the body. Virend Somers is a cardiologist who studies sleep. Since you'll be sleeping lightly, you can use gentle alarms (like a wake up lamp or quiet, soft music) to wake up naturally. Virend Somers, M.D., Ph.D.: When you dont sleep well, bad things happen. You can use it in two ways: if you're going to sleep now, you can calculate the optimal time to wake up if on the other hand you have to get up at a specific hour, it will tell you when is the next window for you to get to bed. May you dream of lovely things and wake to find them real. Each night you sleep is a signal that a new beginning awaits you. The sleep calculator above helps you pick the best moment to go to sleep and the time to wake up so that the time between them allows for several full 90 minute sleep cycles. Sleep awaits those of us who dare to dream. The best option is to wake up when we naturally drift to the lighter sleep phases and our brain is on the brink of consciousness, so the path to wakefulness is much shorter. We can feel unrested, groggy and cranky for a good part of the day. When the alarm clock wakes us up suddenly from deep sleep or interrupts the REM phase, our body doesn't appreciate it. Usually each cycle takes about 90 minutes. Recognizing excessive daytime sleepiness (EDS) is a first step toward. Depression and other mental health conditions, certain medications, and medical conditions affecting the brain and body can cause daytime drowsiness as well. Interestingly enough, while your brain waves frequency is much higher than it was when you were in the deep sleep phase, it's even harder to wake you up.Īfter some time in the dreaming REM phase you fall back into deeper sleep and the cycle repeats. The most common causes of excessive sleepiness are sleep deprivation and disorders like sleep apnea and insomnia. Your body is more or less paralysed, but your eyes move rapidly. REM stands for Rapid Eye Movement and describes the dreaming phase of your sleep. This is when the magic happens and you switch from NREM to REM sleep. Your brain doesn't stay in the deep sleep for long - within 90 minutes it speeds up back to theta and then to alpha waves. This means it's more difficult to wake up someone who's in the Slow Wave Sleep. in stage 3 of NREM, your brain oscillates much slower and is less perceptible to stimuli like light or sound. These are three NREM (Non-REM) stages of sleep. Brain waves frequency goes down from what we call alpha (8–13 Hz) to theta (4–8 Hz) and finally delta (1–4 Hz) frequency bands. Well, while this works for your battery powered electronics, humans have a different, more complicated system in place.Īs soon as you fall asleep, your consciousness drifts away and your brain slows down. It would seem that sleeping is a simple activity - you power down, regenerate over several hours and wake up fully recharged.
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