These shoes help you run like nothing else. I run in other brand shoes and get tired in an hour. With these shoes, I run faster and longer without getting tired. Something is very unique about these shoes. It's like you spend much less energy running in these. I used to use running to train for hiking, it no longer works running in these shoes. Despite running regularly, I get tired and muscle aches from hiking.

One other thing, these shoes are less bouncy and have less clearance off the ground during running. I almost tripped 4 or 5 times when running on the slightly uneven LA sidewalks, and did trip and fall once and got skin scraped off my hands and knee. Very strange shoes.