When you picture a virtual reality headset user, you’re probably not picturing someone like Sherry Dickson. At 69, the snowy-haired, retired elementary school teacher hops into her Meta Quest headset five days a week, for roughly 60 to 90 minutes at a time. She’s not attending live concerts or watching immersive films. Dickson, a fitness buff since Jane Fonda workout videos in the ’80s, largely uses her headset for one reason — to play Supernatural, a VR fitness game with a huge,…


