After staying up late at night can be supplemented by daytime sleep, but if you stay up late at night for a long time will lead to disruption of the biological clock, even through daytime sleep, it will also have a certain impact on the body. After often staying up late, it is easy to cause people to be drowsy during the day, not clear-headed, inattentive, memory loss, depression, sleepiness and other symptoms. Staying up late for a long time will also lead to a decrease in resistance, making it easier to catch a virus and develop cold symptoms. Women often stay up late will lead to endocrine disorders, menstrual disorders, dull face without luster, which are the adverse consequences of staying up late. Although sleeping during the day can make up for these aspects, it is still not recommended to stay up late.