Ultra Fast Keto Boost You can also burn calories without exercising at the gym. All you need to do is reach for a vacuum cleaner, mop or window cleaner. During the vacuuming time we burn 135 kcal. We will burn slightly less, 120 kilocalories, when cleaning windows or floors. We need to use a little more energy for hand washing (150 kcal). However, the most effective is scrubbing the floor, during which we burn as much as 213 kcal.Do exercises at home make sense?