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"[Social psychologist Amy J.C. Cuddy] and a colleague found that holding 'power poses'—open, expansive body postures that convey confidence and power (imagine a corporate titan with his feet propped on a desk or an Olympic runner raising her arms in victory)—for as little as two minutes changes people’s levels of testosterone and cortisol (hormones associated with leadership), increases their appetite for risk and helps them cope with stressful situations."