A large person will burn way more calories from simply going for a walk than a small person. I'm 6'5', 270 lbs, went for a 3 mile walk this morning, and burned

A large person will burn way more calories from simply going for a walk than a small person. I'm 6'5', 270 lbs, went for a 3 mile walk this morning, and burned maybe 460 calories. A person weighing 135 going for the same walk would burn 230 calories. In either case, me and 50%-me would have burned off a 230 calories candy bar.