41.5 calories. No too bad, but again we agree it is more enjoyable burning 41.5 calories in the gym.
Here are the facts:
Window cleaning - 136 calories an hour
Depending on the size of your house or apartment, washing the windows can work up quite a sweat. Not only do you have to spray, wipe and screen off the excess water, you also have to do most of the work overhead - increasing the amount of calories you burn.
Calories burnt washing windows per hour: 136
Calories burnt leisurely walking per hour: 156