It is recommended not to take off your shoes, because if it is a gym treadmill, there will definitely be many people running. If you are barefoot, sweat and bacteria will remain on it during exercise, which may lead to cross infection. Just wear sneakers,

If you are your own treadmill at home, you'd better wear sports shoes, because it doesn't matter whether you wear shoes or not when you run. The soles of sports shoes are rubber or air cushions, so what is the difference between the damage to the treadmill and your barefoot? At the same time, if you run barefoot too much, it will hurt.