Ow ow ow

I'm getting old. Besides the agony of my increasing farsightedness is an assortment of little aches and pains. This morning my right hip is hurting (though I can't tell if it is just muscle pain or a deeper problem; I don't want a hip replacement at my age!!), and yesterday during spin class, my right knee felt a little unstable. The kind of ironic thing is that what usually causes me the most discomfort is walking, not spinning or ellipse.