Dana before

5 of 16
Dana Littleton
32, full-time mother
Guntersville, Alabama

The Inspiration: "On a cold January day, I picked up O Magazine—and had a 'yes!' moment, says Littleton. The next morning at 5 a.m., she stepped onto her unused Nordic Track and never looked back. "I believe that if Jesus can save the world from sin, he could surely help me lose my rear end."

Exercise Strategies: She started working out on the Nordic Track for an hour every morning, added Rollerblading on weekends, and now, running—a sport she never thought she'd be able to handle.