[填空题]
You Can Stay the Weight You Want
Three years ago, at the age of 24, Deborah Whalley decided to get rid of the "80-pound backpack" of extra weight she was carrying on her five-foot-nine frame. It wasn’t the first time that Whalley, a retail assistant manager in Toronto, had embarked on a diet.
"I lost 30 pounds in Grade 9," she recalls. "Not only did I gain the weight back in short order, but I also put on about 50 extra pounds over the next nine years. "
If you’ ve ever been on a diet, you’ ve probably discovered, as Whalley did, that taking off extra pounds is a lot easier than keeping them off. In fact, 95 percent of people who lose weight end up gaining it back.
Cycling back and forth between higher and lower weights is not just demoralizing, however. "There’s some evidence that yo-yoing within a 20-or 30-pound range puts more stress on your heart than carrying those 20 or 30 extra pounds," says Stephen Cunnane,