As a nurse in Tyler, Texas, Deb Taylor, 38, was aware of the importance of a healthy diet and exercise. But for years she lived in denial, allowing her weight to top out at 320 pounds. "Finally I realized I wasn't happy and that it was up to me to change."
When she started walking regularly, results came quickly. "In a few months I went from barely being able to do 20 minutes on the treadmill to power walking a half-marathon [13 miles]!" She lost 170 pounds in one year.