 Kevin Foster is the director of the Arizona Burn Center at Valleywise Health. He says touching anything that hot can cause serious burns very quickly. If you step on it with your bare feet, by the time you figure it out that it's hot, you've already suffered a second-degree burn. Foster says those most at risk include kids who run barefoot, elderly people who suffer neuropathy in their feet, and people with substance abuse issues who might fall and then spend minutes or even hours on the ground.