According to health experts, the guidelines for wearing a mask while exercising outdoors are pretty simple: if you think you'll encounter anyone else while running, HIIT-ing, or whatever else, you should wear a mask. TODAY's Maura Hohman refers to Dr. Richard Martinello, an associate professor of infectious diseases at the Yale School of Medicine, on the subject:
"It's really an issue of whether you're socially distanced or not," he explained. "Let's say you're going for a jog, and you're by yourself, and you're running in areas where there's nobody else. Then you're appropriately socially distanced the whole time, and a mask isn't going to be helpful."
If you can't guarantee that you won't bump into another person, then bring a mask with you, and put it on "if you find yourself in a circumstance where you're unable to social distance," Martinello said.