I love these shoes!  I'm in my 60's and some old war wounds made running difficult, I ran but suffered through the ache's & pains.  I tried these shoes through curiosity and was surprised to find that an aching hip stopped aching after only using the shoes a couple of times.  One must be careful though, I suggest easing in to using these shoes giving your feet time to adjust otherwise one may find ones feet will get sore.