That's what I do in the summer hols. I deliberately shop for a day or two at a time as I have the time to do it almost every day. The only exercise I do which doesn't serve another purpose is swimming in the holidays because I actually enjoy it!I do prefer to work it into my day, like back in the day I walked miles, to and from work, but now I'll have to work it into walking to the shops... 🙂
I average well over 10000 steps a day, btw.