Here's the context:
I'm advising my students to keep their bodies clean to prevent themselves from diseases, lice, et cetera.
Of the three following sentences that refer to the importance of the practice of keeping themselves (and their living areas, where possible) clean in order to prevent illness, disease, et cetera, which is grammatically the best?
- You have to look after your hygiene.
- You have to take care of your hygiene.
- You have to care for your hygiene.