How To Make A Science Project On Human Body Health And Hygiene?

I'm not sure about what your asking for but here are some ideas

1. List and diagram ways to stay healthy (if you are a good drawer)
2. Make a body diagram and show how everything works with tips (again if you are a good drawer)
3. write on a display board about various topics like health, body functions and just decorate it a little.
4. (tip) organize work. This is a general topic, organizing in groups makes it funner and easier to do.