. . . snip. . . but my knees tell me things are different now. . . .snip. . .
Yeah, knees.
This is why my nephew got me into Nordic Walking (with the Nordic walking poles) about 2 years ago. No more impact than regular walking, but the aerobic & caloric impact is 50%
or more than simple walking at the same speed & distance. It really has made a big and positive difference for me. I would recommend it for anyone who is walking with knees. . .