Just getting there isn’t enough. Making it to 100 years old is meaningless if it means hunkering down and playing it safe; living less to live longer. That's not what a century on Earth should be about. The kind of lifestyle, diet, and fitness philosophies we’re offering will naturally age-proof you, and will allow you to explore, achieve, and enjoy more of everything — whether you’re 20, 40, or 60. This list looks at the current science on the habits of people who not only live longest, but who also live best. So don’t only read and follow the advice as ways to extend your days — use it to make each one count for more.