Assertion: yawning | /r/CapableOf | check bood gas
Facets:
Source sentences:
text: your yawn is from low CO2 sensing in your brain, check bood gas, resting calm CO2 should be high, as a result the yawn is your brain sencor thinking you have high blood CO2 when you in fact have low CO2 this yawn and shy is overbreathing causing fatige mouth brething.