Mask myth debunked: Face coverings don't hurt lung function or cause CO2 buildup; Masks are particularly important for people with underlying breathing problems

Mask myth debunked: Face coverings don't hurt lung function or cause CO2 buildup; Masks are particularly important for people with underlying breathing problems: https://ift.tt/34hTmfB Read more... https://ift.tt/34oDiJe