Body language can show whether you have confidence or not. Amy Cuddy, a social psychologist, says that “power posing” will increase your confidence and set you up for success. Studies show that if you do a high power pose, like a superhero pose, for 1-2 minutes, your testosterone increases, while your cortisol (stress) decreases. When you do a low power pose, standing legs together and hugging yourself, your testosterone decreases and your cortisol increases. Before your next interview, try doing a high power pose!