Most Common Natural Human Instincts
Sunday, Aug 30, 2020, 11:15 am
By:
Tony Williams
#10 Yawning
Yawning has been said to be an instinct to create an abundance of oxygen in the body, when cabon dioxide increases in the blood. This can happen when you are stressed, or tired. Yawning also stretches the tongue and throat, which are two of the most overworked muscles in the body.
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