Do Masks Make You Breathe Too Much Carbon Dioxide?
by Beth Skwarecki on Vitals, shared by Beth Skwarecki from Lifehacker on (#53CGM)

An image being shared on social media states that hypercapnia, or breathing too much carbon dioxide, can cause symptoms like drowsiness and dizziness. That much is true, and the image comes from Wikipedia here. What's not true is the implied relationship between hypercapnia and wearing a mask.