YAWN....:)))

A yawn is a semi-automatic reflex that originates in the brain stem in response to a lower level of oxygen in the brain or lungs. Yawning also occurs when a person loses interest in their surroundings, i.e gets bored. It does not necessarily indicate fatigue, although people do tend to yawn when they're sleepy. A study was done in which heart rate, skin effects, and muscle tension were measured in 30 young adults before, during, and after yawns. They found that yawning did increase their level of arousal for a short time.

Yawning is an action that occurs throughout the animal kingdom (cats in particular seem to yawn a great deal). In the late 1980s several studies were done in rats, and it was found that rats yawned more in the early morning before awakening and also when they were very hungry. Several different brain chemicals seem to be involved in yawning, but the mechanisms are still not understood.

Yawning is a normal response to fatigue and drowsiness, but excessive yawning can be caused by a vasovagal reaction and may indicate a heart problem.

Call your health care provider if

• There is any unexplained and excessive yawning.
• The yawning is associated with excessive daytime sleepines

What to expect at your health care provider's office?

The health care provider will obtain your medical history and will perform a physical examination.

Medical history questions documenting excessive yawning in detail may include the following:

When did the excessive yawning begin?
How many yawns per hour or day?
Is the yawning consistent throughout the day?
Is it worse in the morning, after lunch, or during exercise?
Is it worse in certain areas or certain rooms?
Does yawning interfere with normal activities?
Is the increased yawning related to amount of sleep received?
Is it related to use of medications?
Is it related to activity level?
Is it related to boredom?
What helps it?
Does rest help?
Does breathing deeply help?
What other symptoms are also present?
What medications are being taken?

Hello friends how many times have you yawned reading this?? Enjoy !!!!