I admire what you are doing to keep fit. Nevertheless, I have much to do in my home! I go up and downstairs, picking up, keeping order, keeping a supply of everything I need and keeping in touch with the family on a regular routine. I exercise about three times a week on zoom.
I starting exercising about 4 years ago, on a regular basis. I do see a difference, but I think it depends on your age. Going up and down the stairs is still a little "testy". Do you mind telling me how old you are?