20 Public Speaking Tips of the Best TED Talks

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Burn Off a Little Cortisol

Cortisol is secreted by your adrenal glands when you’re anxious or stressed. High levels of cortisol limit your creativity and your ability to process complex information; when you’re buzzed on cortisol, it’s almost impossible to read and react to the room.
The easiest way to burn off cortisol is to exercise. Work out before you leave for work, take a walk at lunch, or hit the gym before a speaking engagement. (If you’ve ever felt more grounded after slogging through a solid workout you now know why.)
Watch Nilofer Merchant on walking meetings.