I used to be a waitress and bartender. I needed non-slip shoes that would allow me to be on my fit for over 10 hours without pain. I have not felt any workout with these shoes. I do not have pain in my feet or knees with these shoes. The longest I have worn them is 16 hours and I did not feel pain in my back or knees by the end of the shift. I had to run across the bar many times and I was the only person who did not slip when running in the bar. These shoes run small, I have to get 1 size bigger than my normal size.