Listen to Industrial Hygenist Kristen Meghan share her knowledge on how face masks affect human physiology. You will be really glad this video came your way today

Also: Dr. Margarite Griesz-Brisson MD, PhD has this to say about masks and their effects on our brains in a recent report entitled, Covid-19 masks are a crime against Humanity and child abuse
“The rebreathing of our exhaled air will without a doubt create oxygen deficiency and a flooding of carbon dioxide. We know that the human brain is very sensitive to oxygen depravation. There are nerve cells for example in the hippocampus, that can’t be longer than 3 minutes without oxygen – they cannot survive. The acute warning symptoms are headaches, drowsiness, dizziness, issues in concentration, slowing down of the reaction time – reactions of the cognitive system." https://healthandmoneynews.wordpress.com/2020/10/09/brain-damage-from-masks-cannot-be-reversed/