Quote:
Originally posted by dtheriault
according to the latest research the "brain needs more oxygen" theory doesn't hold up. otherwise you would yawn after running a mile or in stuffy rooms.
yawning seems to be a social device signaling the ending or beg. of an activity. as in "let's all finish this boring meeting," or "let's all have a cup of coffee." it's also a way for the body to stretch the facial muscles.
there's very little actually confirmed about yawning.
dt
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Post this latest research.