People are wearing a mask during workouts again when vaccination and social distancing don't seem protective enough.
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How to Workout in a Face Mask.
Study: NCAA COVID Restrictions Helped Control Virus Transmission
Should You Wear a Mask Again? What to Know During the Summer Surge - The New York Times
Under Armour debuts masks to wear while working out - ABC News
Mask Safety Tips for Exercise During the Coronavirus Pandemic
How NOT to Wear a Mask - The New York Times
Exercise in the COVID Era: The Fitness Industry Enters a 'New Normal
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