I agree, Catrin. I've always been a walker, through the time I was teaching aerobics right up to now. While it's not my go to cardio and has never been, it's a consistent activity, for over 30 years. Like today, I didn't have the will to get ready for a cold weather ride, but I could force myself out the door for a 3 mile fast walk. I can walk at a 4 mph pace when I want, which is pretty good. DH and I often take short walks on the days we don't do other stuff. And, I used to walk with my mom when she would visit, or I would go to San Diego. Before she got sick, she was often asked if she was a runner when she went for her physicals, she was in such good shape from walking.