From an early age, I was taught to wash my hands, bathe frequently and pay attention to hygiene after defecation and before meals, and also directly maintain good hygiene habits. Washing hands and bathing frequently is actually a way to prevent bacteria such as Escherichia coli from invading the human body. Now, soap and hand sanitizer can clean almost all bacteria, making it less easy for bacteria to enter the body. Therefore, the relationship between hygiene and health is still very close.
When I was in middle school, the school also attached great importance to classroom hygiene, because there were many students and the classroom was not that big. If I don't pay attention to cleaning up and removing the virus, it is likely to cause a large-scale outbreak of influenza and other diseases among my classmates. Therefore, the school requires us to carefully clean up the garbage on duty every day, and the relevant departments will often send disinfection water to our classroom or directly disinfect it. In short, we can live in a sanitary environment.
Because of this, I seldom got sick at school in those years of high school, even my stomach was not good. Health and sanitation are integrated. Keeping yourself and the environment clean and hygienic makes it easier to resist the invasion of external germs and reduce the probability of getting sick. We don't usually separate the two.