My house, obviously, just to be clear! And I go outside to do it so the house isn't danky.
I do it for two reasons.
The first is because I have a chronic condition that can be painful, having a bit first means I ache less and can work harder for longer.The second reason is that housework is so routine it doesn't require much thought. It is a great time to let the mind wander, and let the body get on with the work.