It seems like there is some truth in the expression ‘fake it until you make it’. Really! Could standing like Superman or Wonder Woman actually make you feel and look more powerful? The answer appears to be yes. Expansive, open body postures increase testosterone, decrease stress and make people feel more in control. And here’s the interesting bit, in a selection situation, especially when candidates have to give presentations, holding a more ‘powerful’ posture increases the chances of getting hired by 20%. So strike a pose before going in to an interview (it would be a bit weird if you struck up your Superman or Wonder Woman position when you were actually in the room), and stand tall when delivering a presentation. It could make a big difference.
Wonder Woman. Created by a psychologist! Have a look at this: http://en.wikipedia.org/wiki/William_Moulton_Marston