An everyday example might be in preparation for a speech: first we read through the text, maybe practise in front of the mirror until we’ve got the words and the flow right; then we might invite a few people to watch us rehearse – upping the intensity – and then finally, we might introduce real, emotional pressure; a video camera perhaps, a hostile heckler in the room, a bet on the number of times we hesitate, an unrealistic time limit . . . In this way our brains acclimatize to the pressure. We develop clarity, more accurate, automatic execution and situational awareness. The idea, however,
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