You probably have a vague idea that cavities come from eating sugar and not brushing, but what exactly is going on in there? This video introduces us to the bacteria in our mouth that cause cavities -- and the friendly ones that round out the ecosystem.

If you skipped the gym this morning, make it up now with this ten-minute workout. It's focused on your core and requires no equipment, just bodyweight moves -- but it's intense enough to get your heart pumping and give you a mini cardio workout.

The majority of drinking water in Australia already has fluoride added in, which has significantly improved the dental health of the populace. Fluoride is particularly important for teeth development in children since it helps fend off cavities and tooth decay. That's why fluoride treatments are often offered to kids with a number of cavities or are at high risk of developing cavities. But adults can benefit from fluoride treatments as well.