I dare you to tell me doing household chores isn't a work out.
It's started with me making a clean spot. I vacuumed the dust and dirt (cat fur mostly) from my keyboard, mouse pad/armrest and monitors. Then I cleaned the rest of my desk.
It led to me vacuuming off the sofa, the cat tower/scratch post. And the floor, after I moved things. I put those things back where they belonged.
Then the bedroom. Stripping and remaking a queen sized bed had me panting for breath, and feeling quite physically tired by the time I was done.
Time for a cup of tea