Is it healthy with dreams or healthy without dreams when sleeping?

Many people's statements are inaccurate. Medical research shows that dreaming is a normal physiological phenomenon for everyone. Everyone dreams when he sleeps, but no one can't dream. But why do we sometimes know that we are dreaming and sometimes we don't know that we are dreaming? This should start with our sleep. People's sleep is divided into two stages in EEG physiology: slow wave sleep and fast wave sleep. When people wake up and fall asleep, they must first enter slow-wave sleep. In the slow-wave sleep stage, various functions of the human body are weakened, such as slow heart rate, decreased blood pressure, shallow breathing and complete relaxation. After entering the fast-wave sleep stage, the human body may have the phenomena of increased heart rate, increased blood pressure, accelerated breathing, accelerated limb movement and accelerated speech, so people's dreams appear in the fast-wave sleep stage, and children's brains will produce a lot of growth hormones during the fast-wave sleep stage. After that, I went into slow-wave sleep, then fast-wave sleep, and so on ... When I woke up naturally, I changed from slow-wave sleep to awake, so at this time, people will not remember the dreams in fast-wave sleep, so they will not feel dreaming. However, for some reason, such as sound stimulation (alarm clock), nightmare, pain and so on. In the fast wave sleep stage (dreaming), the human body directly enters the awake state, and then it will think of the things in the dream and feel that it has dreamed. To sum up, everyone has dreams, but whether they can be remembered has nothing to do with health.