SLEEP WITHOUT DRUGS: DREAM THEORY
Another possible explanation of why we need to sleep is perhaps a psychological one. When we are sleeping, we all dream. Dreaming has a restorative function. We act out and experience some of our frustrations and anger during dreams. When we wake up the next morning, we have forgotten our dreams. This forgetting is important, as it allows us to forget our frustration and anger at the same time. Dreams are like a psychological filter, filtering out the worries that accumulate during the day. Sleep laboratories have demonstrated that when we are dreaming all the big muscles of the body are totally relaxed. This may be the only time that the body muscles are ever completely relaxed.
Another recent discovery in dream study is the occurrence of a male erection, which is discussed in chapter 8 on Sex and Dreams. It has been observed that whenever a man dreams his penis is erect, no matter what sort of dream he is having. This dream erection occurs in all age groups and this to be important for the proper development of the penis. Hence, at least for men, dreams are very important.
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