What can I say my teen's are the same. I have always walked around while reading docs, it was a tip I got years ago from an ergonomic assessment. A lot of my colleagues do too. Seemingly it can help retention and posture.
I could be reading a couple of hours or more a day. I do six flights up and down a few times a day I don't use the lift.
It isn't difficult at all. Phone, fitbit and Strava all showing similar stats. In the evening I usually go for a walk, think it's c. 5. Km circumference of park that isn't a long walk, it's generally with a friend and coffee in hand.
Evening time, cook, tidy up, sort laundry and then read a book, film etc. I know I move a good bit but wouldn't say I am particularly fit or active. I suppose it's all comparable as my wider family would consider me the lazy one 😅.
I don't live in a stately home but an apartment c. 1400s, feet. Three bed plus study so it's a decent size but not unusually so for the area.
At the weekends we would go for a proper walk at the weekends up a coastal path which is 7 or 10kms, depending on path chosen it's gorgeous so tend to do it most weekends.
I suppose I am conscious that this is my norm, as a child our mother used to walk us ,5km or more daily to shopping centre, we played out all day and ran around a lot. I just followed suit with my children, they always slept and were typically in good form, I suppose my late mothers approach was fresh air and a stretch sorted a lot played a bigger part in my behaviour than I thought. Interesting, thank you for helping me realise that.