Everyday Systems

I usually walk about an hour to an hour and a half every day, but it's composed of fifteen-minute intervals between classes. Is that okay, or does there have to be a continuous session? I'm worried, since a lot of articles say that you have to keep your heart rate up for at least 20 minutes.

Hi, everyone. I'm new here, but I am practicing all of the Everyday Systems. Anyway, I've been Urban Rangering with my guitar for about a week now, and it is fantastic. To me, there's really nothing better than a walk through a park with my baby slung around my neck. Yesterday, I spent almost an hou...