It is a very good state for patients to sleep without dreaming at night, although dreaming is a normal physiological phenomenon for people, dreaming occurs during the light sleep period, human sleep is alternating between deep and light sleep, there are about 5-6 alternations every night, and people are prone to dreaming during the light sleep period. If the patient wakes up in the deep sleep period, he or she may not have much memory of the light sleep period. If the patient is dreaming and wakes up during the light sleep period, he or she will have some memory of the dream. Patients sleep at night without dreaming, which means that patients have a longer period of deep sleep. Deep sleep helps the body recover, relieves physical fatigue and promotes the metabolism of brain memory cells, and it is better for the body if patients do not dream or dream less.