<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=799546403794687&amp;ev=PageView&amp;noscript=1">

“Once you get inside (the gym), you’re really sharing that same airspace. Because you’re doing that, the risk is just going to go up,” Dr. Lisa Miller, a professor of epidemiology at the Colorado School of Public Health. “Wearing a mask lessens risk.”