In the words of one Disney villain, “Don’t underestimate the importance of body language.” According to social psychologist and Harvard Business School professor Amy Cuddy, changing your posture can change your mind and, more so, others’ behavior toward you, via that whole fake-it-til-you-make-it tactic. Next time you have a big meeting/date/"accidental" run-in with the ex, take back the power by prepping with a power stance. Watch this 2012 TED Talk, strike a pose (our favorite is 'The Wonder Woman') for two minutes, or, you know, long enough to feel it, then stay open (so open it hurts!). Best-case scenario? People will open up to you. Worst case scenario: your arms will look great. Win win.