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Which state of sleep produces dreams?

Modern medical research has found that people will have two states during sleep, normal sleep and abnormal sleep. These two sleep states appear alternately during sleep. If your sleep is normal, 8 hours a day, then this long time is enough for the two states of sleep to repeat three or four times.

Let’s talk about normal phase sleep first. The technical term is that this kind of sleep is not accompanied by rapid eye movement, also known as non-rapid eye movement sleep. During this stage, the person's heart rate will be much slower than when awake, breathing will also slow down, blood pressure will drop, and the muscles throughout the body will begin to relax.

After knowing normal sleep, it is easy to understand out-of-phase sleep. Out-of-phase sleep is referred to as "rapid eye movement sleep", which is also "dream sleep". Compared with normal sleep, people in out-of-phase sleep will be more relaxed, and even the final muscle tension will decrease and tendon reflexes will disappear. But the difference is that heart rate, respiration, and blood pressure all increase. The medical community believes that this phenomenon can promote human metabolism. At this time, the body's functions are in a state of recovery, including human brain protein tissue, etc., are all preparing for the second Prepare for the day's energy recovery.

So what is the relationship between these two sleep states and sleep? We can carefully analyze the cycle process of normal sleep and out-of-phase sleep.

After people fall asleep, they will have about 90 minutes of normal sleep, which is the stage of preparing for dreaming, and then enter heterogeneous sleep. The initial heterogeneous sleep only lasts 5 to 10 minutes. Even though it is so short, we can have a lot. of dreams. Next, we enter normal sleep again. The time of normal sleep is basically stable, but the time of out-of-phase sleep will gradually extend. Among the several out-of-phase sleeps throughout the night, the last one is the longest one we have dreamed about. It can take up to 30 to 50 minutes.

Therefore, we often feel that sometimes we are dreaming and sometimes we are not dreaming, or we feel that dreams are intermittent and unrelated. This is probably due to the alternation of normal sleep and out-of-phase sleep. When we wake up, we happen to be in the normal phase of sleep, so we feel that we are not dreaming. On the contrary, when we wake up from the out-of-phase sleep, we feel that we are dreaming. Of course, this is just one explanation, and there are still many mysteries waiting to be explained about the magic of dreams.

[Master’s characteristic dream analysis]

The above dream interpretations are general interpretations. If you need to know specific matters, you can ask a master to interpret your dreams based on your birth date and the scene when you dreamed:

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