I m 53, 5 4 and 105 pounds. I m active, walk a lot, hike, in pretty good shape for my age. For several years I ve been experiencing soreness and pain in my upper thighs, worse after sitting for a while, especially cross legged. When I stand up I sometimes can barely walk for a few seconds because it feels so stiff and sore. It doesn t bother me as much when walking or hiking. Stiff when I get up in the morning.