After working out(I do workouts like Jillian Michaels 30Day Shred, Leslie Sansone's Walk at Home, and Chris Freytag's 10lb Slimdown) with these shoes for a month I will rate them a 4 star. They are the best I have found for the job, but they could be improved. Side to side motions will make the ankle hurt some. They do run small, as others stated. I ordered a half size up. I also found them to be a much narrower shoe then typical shoes. I have never had a problem but these ones are a much tighter fit on the upper foot! I pretty much wear the shoes from the time I wake up til I get my work out done, which can be from 2hours to 8hours! They are very comfortable and at the end of the day my feet don't kill! My knees seem to have improved too since wearing these shoes for working out versus cross-training nikes. .