“Shoes are not the reason people get injured,” Karp says. “Their training is the reason they’re getting injured.” So don’t knock the rise, cushioning, support, minimalism, or maximalism of your sneakers.
The Fix: If you're having problems with injury, see a doctor or tweak the way you're working out. And if you do trade your old sneaks for something vastly different, give your body ample time to adjust. Don’t take off on an hour-long run in Innov-8 Trailrocs when you’ve been training in Hoka One Ones.