During the pandemic most people found themselves not able to do many things that we took for granted, including our indoor physical fitness activities. With the gyms, yoga studios and pools closed many were forced to lace up their shoes and head out for a walk that eventually may have turned into a run.
At a gym maybe you were taking a class that was led by an instructor or you used a machine that provided you the workout for you to follow. But now it was just you and you had to do it on your own.