First, you have to decide a theme. The scope of health care is too wide. You can focus on one thing you are good at, such as diet and stomach conditioning. You should talk about the situation of people's stomach and the importance of stomach in people's health care, so as to attract everyone's attention, and then tell people how to do it in the next crisis. Specific methods You should collect more information, and it is best to make PPT courseware. I wish you success!