Automatic reactions to threatening situation including sweaty palms, racing heart, and upset stomach is how our body makes “fight or flight” preparations. We react to any unexpected negative situation in this way because we inherited it as an involuntary survival mechanism from our prehistoric ancestors. Tens of thousands years ago any noise from outside a cave inhabited by prehistoric humans meant danger and threat to their lives. They had to get ready either to fight or run away to save their lives. Accordingly, the heart pumps faster to send more blood to arms and legs, the main tools in fighting or running, the eyes dilate for better vision and any process unrelated to fight like digestion in stomach gets temporarily turned off.
The main problem why it is so difficult to cope with emotions in trading is that our brain has not evolved much since those ancient times!
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