I love to walk for exercise but I don't do it enough. Too hot in PHX right now, even if I did make the time. When it's nice, we do a 1 miler around the neighborhood with the kids, probably 3x a week. Lately, about once a week when my family goes to bed, I interval walk/sprint the 1 miler. I think I need to get that up to 2x week and do regular walks, too. Sprinting > Walking > Jogging
I work from home too, so I'm not walking much at all during the day. It's really bad that I live such a sedentary lifestyle. I read some research that showed people who are overweight and active (not me) will outlive people who are thin and sedentary (me). I do lift weights 5x week, but that's not sufficient. I gotta get going around more.