You already know how satisfying it is to revamp your home, but did you know you're bettering your body while you're at it? Many home-improvement jobs require both cardiovascular activity—the form of exercise that torches the most calories—and strength-building for lean, healthy muscle. But exactly how many calories is your sweat equity worth? We came up with the answer for the 15 common jobs, thanks to this activity calculator
(and based on a 175-pound adult). Whether you're hauling heavy lumber or merely fixing a squeaky door, your next DIY job will remodel your physique, too.