The key to any shoe is to get the proper size. Many people squeeze their feet into too narrow a shoe and that will cause problems. While standing firmly balanced on both feet have someone trace around your foot. Now cut that tracing out and place in your shoe. If it is wrinkling or scrunched up then your shes are too narrow.Also make sure the toe box is adequate for room for your toes. If you have to"break" in your new shoes, your probably didn't buy the right size. The support your shoes give you only lasts 250 miles. If you find your legs are getting tired at then end of the day then your shoes may look brand new but they are in fact wore out. I average 8 miles a day in my job and I wear Crocs Professionals. I buy a new pair every 3 months and that is not often enough!!!