So some people fight fear with the fight or flight system, whereas others are more empathetic in their handling of the situation.

Most of the fight or flight type responses tests have been dominated by male test subjects, whereas those which included sufficient females have proven their different response.

The fact that women bith children makes them more inclined to be empathetic and nurturing in situations of stress. Fight or flight does not work when you have a child to care for.

Further studies have shown parallels between sex, brest feeding, laughing and tickling. Apparently our oxytocin receptors are intertwined with areas which are heavy in dopamine receptors (within the nucleus accumbens).

While oxytocin does not directly cause pleasure, it's close intertwining with other parts of the mind show how the effects of a long gaze, drugs, humping, or a deep laugh cause the pleasureful sensations in our minds.

Laughing has also proven to be a strong social bonding situation. Think how rarely you laugh when by yourself and how much you laugh when near others.
The very act of laughter also improves our imune system.
I laugh you...ha

It's hard to laugh unless you have a vivid picture of a person and their words in your mind. Children still learn to smile and laugh instinctively because they feel the safety and warmth of another. While they understand very little, they understand the power of that social connection. Laughter shows how extroverted of beings we are. Sadly though my job which rarely gives me an excuse to leave the house makes most of my communications occur one key at a time.

Though as we get older it seems we are led to believe that we have less time for playing around. Yet another reason why corporate america can kiss my ass... lol...I know I am learning and will eventually find what I want though...