Stay cool while eating

Copied from "What every Body is saying"
Did you ever wonder why you get an upset stomach if there is an arguement at the dinner table? When you are upset, your digestive system no
longer has as much blood as it needs for proper digestion. Just as your
limbic system’s freeze, flight, or fight response shunts blood away from
the skin, it likewise diverts blood from your digestive system, sending
blood to your heart and limb muscles (especially the legs) to prepare for
your escape. The upset stomach you feel is a symptom of that limbic
arousal. The next time an argument ensues during a meal, you will recognize the limbic response of distress. A child whose parents fight at the
dinner table really can’t finish his meal; his limbic system has trumped
alimentation and digestion to prepare them for escape and survival. Along
these lines, it is interesting to note how many people vomit after experiencing a traumatic event. In essence, during emergencies the body is
saying that there is no time for digestion; the reaction is to lighten the load
and prepare for escape or physical conflict (Grossman, 1996, 67–73).

Fake and real smile

Can u distinguish between a fake smile and a real smile. Its easy.

A real smile appears primarily because of the action of two muscles:
the zygomaticus major, which stretches from the corner of the mouth to
the cheekbone, and the orbicularis oculi, which surrounds the eye. When
working together bilaterally, these draw the corners of the mouth up and
crinkle the outer edges of the eyes, causing the crow’s feet of a familiar
warm and honest smile.
On the other hand When we exhibit a social or false smile, the lip corner stretches sideways through the use of a muscle called the risorius.
(Information taken from book "What every Body is saying" by Joe Navarro, page number 186)