- Yawning is an involuntary behavior that may perform the important function of cooling your brain
- When you yawn, the influx of cool air may ventilate your sinuses and facilitate brain cooling
- Brain temperatures increase when you’re sleep deprived, which may be one reason why exhaustion triggers excessive yawning
- Yawning may also indicate a capacity for empathy, and may be an evolutionarily old process of great social significance
http://articles.mercola.com/sites/articles/archive/2012/04/19/yawning-triggers-and-functions.aspx?e_cid=20120419_DNL_art_1
This is a fascinating thesis and it will be interesting to see how it develops in coming years. I thought it was particularly interesting that there's no other compelling explanation for why we have sinuses.
No comments:
Post a Comment