1. Don't retire
2. Floss everyday
3. Exercise
4. Eat fiber-rich cereal for breakfast
5. Get at least 6 hours of sleep
6. Eat whole foods, not supplements
7. Worry less
8. Live like a Seventh-day Adventist
9. Follow a routine
10. Hang out with friends
Wait, what's this?! Habit number 8 is the quoted exactly as published from the online article. No joke. Don't believe us? See for yourself: http://health.usnews.com/articles/health/baby-boomer-health/2009/02/20/10-health-habits-that-will-help-you-live-to-100.html?PageNr=2
Screenshot: US News & World Report article. Click to enlarge.