Sleeping and dreaming, if the dream is light, the next day to wake up physically and mentally happy, it means good; but dreaming a lot, affecting the next day’s work and life, it means bad. Dreaming is a normal physiological phenomenon and a natural part of sleep. There are deep sleep and light sleep, and dreams mostly occur during light sleep time. Sleeping and dreaming help to restore and strengthen the brain function, and can bring pleasant memories. If you have light dreams at night, no nightmares, etc., and feel no discomfort when you wake up, and have no adverse effects on your work or life, it means that you are sleeping well. On the contrary, if we dream a lot at night, often have nightmares, and wake up the next day with dizziness and lack of concentration, etc., it means that sleep is not so good and we are in a deep sleep for less time. If dreaming a lot affects the next day’s work, study, we can the first day in the hours before going to bed do not drink stimulating beverages, such as wine, coffee and strong tea, etc., and do not spend a long time on the computer or cell phone screen, may be a little bit of help to our sleep.