Well, it probably woulnd't hurt if you walked between 1 and 3 miles a day, as well.

I walk to and from work most days, unless it's actively pouring or snowing, so I get a good bit of exercise. When I go out on the weekends, it's bus, Metro and walking, for the most part.

The stairs will be hateful for the first month or so, and after that I'll be in condition for them.