Why Are You Breathing? It’s Not about You

Photo by Kelvin Valerio from Pexels

ith every breath you take in, oxygen from the air leaches out from your lungs into your blood stream. At the same time, carbon dioxide creeps out of those dark, silent rivers and into the caverns of your lungs. From there it moves back into the world. You do this about 20,000 times a day.

Why?