This entry was posted on Thursday, October 22nd, 2009 at 4:13 pm and is filed under Information, Sleep. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.
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October 22, 2009
Isn’t it amazing how yawning can be contagious! How many times have you found yourself sitting next to someone, they let out a yawn and before you know it - you are yawning also. Now while I’m not sure why yawns are contagious, I can help you understand why the first fellow may be yawning - he or she may be lacking sleep!
When our bodies are receiving their required rest, all our body parts and brain receive all the necessary oxygen and blood flow required. In an individual where there is a lack of sleep, this can play a part in the necessity to yawn. Oxygen deprivation is the real cause of yawning. Our breathing becomes quite shallow when we are fatigued because we simply do not have the energy to draw deep full breaths. As this shallow breathing continues, over a period of time, it will take away the available oxygen. Soon our brain is sending out an S-O-S call indicating oxygen is needed NOW! The body’s response is to yawn a BIG yawn. This deep breath pulls a lot of oxygen into your lungs quickly. Your brain can relax once again and thanks you for yawning so hard.
Another good reason to give your body it’s required rest - to keep oxygen flowing throughout our system!
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