I am 69yrs, and have been taking yoga and aerobics 2X/week for a couple years. I recently added a high impact Zumba class, and after about a month, my left heel developed quite a bit of pain. A physical therapist suggested plantar fasciitis, and I began wearing a plantar insole (all the time), a compression sock , and lately, a thermal plantar bootie during the night. This has been going on for a couple months, and has really been crimping my ability to walk w/o pain. Today, a friend suggested that plantar f. usually comes in both feet together, and that maybe thats not what I ve got...I thought of heel spurs, but I read that they usually come w/plantar F. I ve been trying to avoid DXrays and a $50 podiatrist visit...What do you think? Thanx, Jenny...This is very misleading...what happened to the WebMD site I was writing to?