How to Yawn #12
How to Yawn #12 By Atom Bergstrom Atom’s Blog Re: How does deep yawning affect carbon dioxide/oxygen levels? And then, what follows from that? According to the beaker boys, yawning doesn’t affect carbon dioxide/oxygen levels, but their research is superficial. Spontaneous yawning was investigated, not Deep and/or Extended Intentional Yawning. Obviously, the…