Yawning- In the lack of Oxygen

Many people gives many reasons for the phenomenon of yawning….Yawns are automatic reactions to the increased amount of carbon dioxide (CO2) in the blood. When people are exhausted, bored, fed up, tried, or being inactive, their respiration slows down. This phenomenon leads to decrease in the level of oxygen and an increase carbon dioxide level in the blood. By opening the mouth broad and inhaling genuinely, yawns draw in a big sum of oxygen while ejecting the accumulated carbon dioxide from your blood, bringing your body back to its normal condition. In other words, we can say it like this; yawns occur when the body needs additional oxygen, and being exhausted is one of the factors that make this happen. Unluckily, this biomedical clarification for yawns will cut the little ice with your chemistry professor or manager. If it catches you yawning at a critical instant, you can practice to control it for such critical moments.

How to Become a Writer - wikiHow

How to Become a Writer - wikiHow