What does a mask do? Blocks respiratory droplets coming from your mouth and throat.
Two simple demos:
First, I sneezed, sang, talked & coughed toward an agar culture plate with or without a mask. Bacteria colonies show where droplets landed. A mask blocks virtually all of them.
me trying to balance work, education, gym, hobbies, family life, eating right, saving money, being happy, 8 hours of sleep and having a social life: https://t.co/39wKQ7NMbW