Our main living is on the main floor, but my office/craft room is upstairs. I must go up and down 50 times a day. 18 steps.
I start each day, except Sunday with 10 times up and down from 1st to 2nd floor (15 steps). That’s at least a 10-story building.
During the day, I estimate 20 more times up and down. My office and our living area is on the second floor.
This has other advantages: eg. If company comes, the living room downstairs is always nice and tidy.
I’ll be 80 next January.