Vortex, keep up the good work! I guess I chose 30 minutes because I know that's the longest I can go right now. I walked with an employee around our work place a couple months ago and 30 definitely winded me quite a bit (more than quite a bit if we're being honest). It almost killed me, but that's a challenge I'm trying to overcome.
As for morning time vs evening...I always have more energy when I wake up than when I get off from work. It's going to be hard, and if for some reason I don't I'll have to suck it up when I get home.
I was thinking about getting a treadmill, but I don't know...I had gotten an elliptical machine a couple years ago, got on it for 10 minutes and literally never got back on it again. I ended up selling it.
Thanks, Heather! I think I will.