Why is yawning contagious? Admit it: how many times have you found to blame the start of your mistake
prolungatosi for a while 'minutes, someone at your side who started before you? If
for many, yawn so far has meant a synonym for boredom, hunger, indigestion, fatigue, well prepared to think again. Undoubtedly, these could be very good reasons, but there is another much more frequent and justified: the yawning, in fact, represents the response of our body to self
lack of oxygen and therefore, the body tries to breathe through "unusual" as precisely the wrong, to compensate for this deficit, by expanding the pulmonary alveoli.
If we are, therefore, in the company of others and comes to us from yawning, the reasons may be manifold: either it's time for lunch or dinner, and then we have a little 'all hungry, or it is evening and then coming up general fatigue, or, as in most cases, we are short of oxygen at the same time.