We watched this 2012 TED talk by Amy Cuddy at the outplacement meeting I was at today, and it was fascinating, tying into a lot of other research I've read (about how intentionally smiling can relieve stress, or how crossing your ankles raises your blood pressure). The suggestions about actually assuming power poses as a part of going into a stressful encounter is … well, something I'll certainly bear in mind.
It was also, unexpectedly, inspirational.
Worth a watch.