Supermodel Christy Turlington may be 44, but she's had a year that any up-and-coming model would be envious of. A new Calvin Klein campaign, Interview magazine cover, and more have kept the mom of two active career-wise. To keep her energy and fitness levels up, Christy is an avid yogi and runner — she even ran the NYC marathon this year! "I'm lucky because most of the stuff that I do makes me feel good, too. I'm a yoga practitioner. I run. I spend time with my kids. These things all give me energy," she's said, and we couldn't agree more.