Dr Christopher Winter, director of the Sleep Medicine Research Center of Martha Jefferson Hospital in Virginia, said that the longest nap time is about 30 minutes, usually only in a light sleep state. But if you close your eyes during a nap, you will start to have all kinds of strange dreams, indicating that your brain is seriously short of sleep and can't wait to enter the deep sleep stage.
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Ways to improve sleep
1, keep a good attitude.
We should face the problem of dreaming correctly, don't be troubled by dreaming, and keep a peaceful mind. You can keep a diary or listen to music and read books before going to bed. In addition, some factors in life will also affect the quality of sleep, such as caffeine, drugs taken, alcohol and tobacco. Try not to eat these foods.
2. Keep regular and enough exercise.
Take an hour out for aerobic exercise every day, about 2~3 times a week, which can relax the whole body and increase the deep sleep time. But you can't do strenuous exercise before going to bed, otherwise it will excite your nerves and affect your sleep quality.
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