Set your own rules as above, but personally, Yep, walking is fine.
Its probably Alien to most of us but its unbeleivable how many people dont even do that – just ‘walking’.
I’ll certainly be counting it, and as above, if your recovering from a huge ride the day before, or dont fancy the gym etc, then its amazing how good a decent, brisk-ish walk for 30-60 minutes makes you feel. I always start the day feeling a bit fresher and standing taller when I’ve walked back from the School run. Just being outside is a start.