Chefs tend not to be the most weight-conscious professionals. "We drink too much, we eat throughout the day, five to six days a week, 12 hours a day – it's very hard to be healthy as a chef," says Mike Isabella, chef and owner of Graffiato in Washington, D.C. That's why the Fit for Hope Challenge, a 12-week weight loss contest involving more than 15 chefs in the Washington, D.C. area, is such a telling feat. The contest, which was created by Isabella as a benefit for the American Cancer Society, ends this Tuesday, September 24 with a final weigh-in and gala that includes food from each of the contestants' restaurants. The leading chefs have come up with recipes, workout regimens, and mental tricks to keep their cravings at bay and shed the pounds. We talked to the current leaders of the contest about their strategies, tips, and how we can all avoid temptation (we included before and after images for a few of them, too).