First, people who work at night are prone to depression and bad temper. Because the environment of night shift is relatively depressing, people are prone to grumpy and bad temper, and it is easy to be depressed when they work night shift all the year round.
Second, physical fitness tends to deteriorate. There is basically no exercise at night shift all the year round, and people's physique will also decline. They may catch a cold once or twice in the previous year, but their physique will decline after working at night shift, and they will catch a cold as soon as the weather turns cold.
Third, people who work night shifts all the year round are easy to get old, the factory has two shifts, and life is black and white. If this continues for a long time, it is easy to disturb the biological clock. People naturally become lifeless, look older and have more wrinkles on their faces. People who work at night are several years older than those who work at night.