1. Long working hours: Usually working eight hours a day, sometimes even staying up until one or two in the morning, is a physical and psychological challenge.

2. Mental stress: Due to the need to serve different types of guests, employees need to be patient and focused at all times to meet the needs of guests.

3. Heavy physical labor: Health center staff need to complete various physical work, such as carrying heavy objects, cleaning, etc., which is a burden to the body.