It's very interesting how with all this technology, we still preserve some of those ancient practices that existed thousands of years ago. We incorporate these practices into cooking processes, beauty routines and even hygiene regimens because they have shown to give results we can't easily get with modern tools and products.
One of those ancient routines that we still see today is oil pulling. With oil pulling you basically swish oils like coconut and sesame oil around your mouth for about 10 minutes, before spitting it out and brushing.