yawn

@jhoanee (598)
Philippines
March 13, 2007 5:16am CST
well this is just a simple question but i think i need some explanation and all ideas here would be appreciated. why does we yawn when we saw other people yawn? do u think there is a connection on it? or its was just a state of mind? do we yawn because we are sleepy or because we are tired? does animals also yawn? hope u can give some ideas on this guys..thanks!
2 responses
• United States
13 Mar 07
I am one of those that is nearly clueless as to why people and animals yawn. I am not sure where I heard this, but I once heard an explanation that stated that when we are tired our bodies aren't getting most of the oxygen that our cells need to keep the body going and in the awake state. When we yawn we are taking in a great deal more oxygen and when we exhale we get rid of a great deal more carbon dioxide, thus helping keep the body in a more awake state. Whether that statement is true or not I am not sure, but at least it is something to consider.
@jhoanee (598)
• Philippines
13 Mar 07
i think we should take that as a consideration. so yawn help us to keep in awake state and not to make us feel more sleepy..i read an article saying that the exact causes of yawning is still unknown. i guess this is a state of our body were we releases some extra air that our body dont need and inhale more useful air. well thanks for ur reply.
• Australia
13 Mar 07
Scientific research has shown us that there really is no definitive answer to any of these questions. Yawning seems to be one of the many wonders of the animal race, that we haven't yet figured out.
@jhoanee (598)
• Philippines
13 Mar 07
i have read an article about yawning and it says that the exact causes is still unknown. it is a reflex of deep inhalation and exhalation associated with being tired.