This is a question I’m sure just about every Philadelphian has pondered as we shovel out from last night’s snowmageddon. The answer: A pretty impressive 414 calories per hour. So if you can’t make it the gym or your favorite class is canceled, grab a shovel and get on out there. And if you already spent the morning snacking on the couch, consider shoveling out your neighbor, too. Just remember: Bend those knees! Calorie estimate based on a 150-pound person.