Why Does My Body Do That? 2

The causes of some involuntary body quirks.
Sniper007says...

Wow, that first one was so far off the mark, it's laughable.

When you hair stands up on end, it is sticking out further from your boding, giving you a slightly greater lead time for anything brushing up against you. It also gives you greater sensitivity to physical stimuli that may brush near your body. It makes you more sensative to small air currents as well that are flowing over your skin.

All things things help in survival, fight or flight type situations.

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