Well, I played tennis last night with my mask on, as mandated by the Amy Yee Tennis Center. My mask had three layers of cotton fabric. It got a little ugly at times.
As you huff & puff after a long rally — through the mask — your panicked brain roars ‘MORE OX-Y-GEN ..NOW! MORE OX-Y-GEN ..NOW! .. and it makes you want to yank the suffocating $@#! thing right off your face.
So! I’m definitely going to have to try a few more different masks.