This is the 1st tennis shoe I've ever bragged about. All my friends have them. In fact my wife had bought a regular pair of the shape ups for the gym but when she saw the Resistor Resistance Runner. She took hers back to the store after wearing them for 4 months and traded them in. I can't believe they let her do it. But she got these for the gym. Don't know if it work for you but here's a video at YT youtu.be/fLv1WA_kOb4 - Just copy and paste if you can to see them in action.

The first week I got these I ran 2.5 miles, even with severe chin splints. I just wore out my first pair. You can step on a rock the size of a peach seed and absorbs into the heel.

Anyways, I hope you like as much as my wife and I do.