First of all, frequent night shifts will reduce the body's immunity and definitely have an impact on the body. Sometimes it will make your biological clock out of balance and do great harm to your eyes and brain.

Secondly, after a long time, there will be physical exhaustion, fatigue, upset and other phenomena, leading to accelerated aging.

Finally, I hope the landlord knows how to use time to rest, pay attention to healthy eating and exercise properly.

Extended data

Staying up late is a Chinese character, pinyin is OYè, which means staying up late at night or staying up all night. Generally refers to being sleepy all night or late at night because of something. From "Tell the Story of Li Cuilian in Qingping Mountain Hall".

Staying up late is a phenomenon often heard or done in modern life, and it is a bad habit that harms people's health, which will lead to some diseases and reduce efficiency. Staying up late is a bad habit, which is prone to endogenous hypoxia.

References:

Stay up late _ Baidu Encyclopedia