Why, if you sleep for a long time, then after waking up you do not feel a surge of strength, but on the contrary, like fatigue?

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2 Answers

  1. The brain, as well as the whole body, was not subjected to any load during the whole night. You wake up and the activity begins. You feel tired, so that it is not too sharp and everything is gradual. The brain is most productive after 2-3 hours: it comes to its senses and is as” fresh ” as possible and is ready for serious workloads and for reading TheQ.

  2. Legends say that the more you sleep, the better. But not everything is so simple.

    During sleep, our brain “puts on the shelves” everything that happened to us during the day, sorts and processes the accumulated material-this is a well-known fact. What happens if you are abruptly interrupted from your favorite activity?

    Each person has their own biological clock. And in humans (as a species) these watches are quite similar. Here you can read more about the human body's regime. Based on this schedule, we can conclude that the duration of an ideal and healthy sleep is about 7-8 hours.

    A long night's sleep is good, but too much sleep can also be harmful. It's all about sleep cycles. One cycle consists of four phases: the first and second phases are fast, and the third and fourth phases are deep. The most important phase, of course, is the fourth. It is quite difficult to wake a person up when his sleep is at this stage. The cycle starts with a ten-minute first phase, followed by the second, third and fourth, and then, as you might guess, everything is in reverse order. Depending on the phase in which you wake up, your state of health also depends.

    It is best to wake up at the end of the cycle, in the REM sleep phase. But how to calculate it? Each cycle lasts about 90 minutes and is repeated 4-5 times per night. At the same time, the closer the morning is, the less the deep sleep phase lasts, since around five in the morning cortisol is released into the blood, in the morning this “stress hormone” serves to wake up. Naturally, the level of the “sleep hormone” — melatonin-decreases.

    For example, if you go to bed at midnight, the recommended time to wake up is 6: 00 or 7: 30. Well, or an hour and a half less or more. I think the principle is clear. If you wake up at 6: 45 or 8: 30, the cycle that has not yet ended will be aborted unexpectedly. Therefore, there is fatigue and drowsiness, because the brain just needs to go back and complete the cycle.

    I hope I answered your question. My advice is to divide your sleep into one-and-a-half-hour segments and everything will be fine

    Good dreams and work productivity! 🙂

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