Blast More Calories - Runner's World

Blast More Calories - Runner's World: "The longer your run, the more calories you burn. If you're not in the habit of doing a long run, add one to your routine every other week. 'For beginners, a sensible way to build up is to add five minutes at a time,' says Runner's World coach Budd Coates. More advanced runners who routinely log hour-long runs can work up to runs that are 50 to 100 percent longer than their typical weekday run. But build up slowly, so your total weekly mileage doesn't jump by more than 10 percent in a single week."