The Final Weigh-In

Fifty-year-old Barbara wasn't only overweight and addicted to food—she had a 30-year-old addiction to cigarettes, too.

Now she's lost a total of 17 pounds and five inches from her waist, and says she has given up smoking for good.

Bob says Barbara's weight loss challenge had an even higher degree of difficulty than merely starting healthy habits—quitting smoking actually lowers your metabolism. "It's very difficult to quit smoking and drop weight in the same year," Bob says. "You were able to do both, so congratulations!"