Consider having your favorite piece of cake every Saturday instead of every day. That way it will probably remain your favorite because you don’t have it so often. Think of how many calories you won’t have to burn later by sweating at the smelly gym working out. Hint: Close to 1,500. Losing one pounds means burning 3,500 calories more than those you consumed. So you can technically lose a pound every two weeks or so – or about 25 pounds a year.