My mother is in her 80's and suffered a hip problem because of slipping out of a chair and landing flat on her tail bone. She used to sit on a “normal” heating pad a lot to help with this pain and it very honestly does very little good. I had her come over one day and let her use DeepHeat™. That took about 15 minutes for her to feel the effect of the deep heating so I sent that pad home with her and she has used it daily since and loves it. I even bought her a power inverter that she can plug into a cigar lighter in their vehicle so she can use it if she has to sit in the back seat of that vehicle. ~ Cliff Woods