Sometimes it’s helpful to construct instances of unpleasant emotion on purpose. Think about football players who cultivate anger before a big game. They shout and jump and pump their fists in the air to get themselves in the right frame of mind for crushing the competition. By elevating their heart rates, breathing more deeply, and generally influencing their body budgets, they create a familiar physical state and categorize it in the context of the sports stadium, based on their knowledge of past situations where a particular emotion helped with performance. Their aggression also strengthens
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