A good poker face can win you a fortune or help you sell a difficult lie, but that term might be leading us all astray. For poker champ Liv Boeree, calling someone's bluff isn't about their face at all, it's often much more about their body as a whole—and one part in particular. "The feet are often the most reliable thing to look at on your opponent because they might be completely stoic in their face but their feet are bouncing around," she says. We're all hyper aware of our faces as a primary point of communication, but our bodies are speaking more loudly than we may realize. Typically, "the lower down on the body that you're looking at, the more reliable the information," she says. Keep in mind, reading body language is an art not a science, but thanks to Boeree's years of experience at the poker table she highlights some classic behaviors of bluffers, and reliable strategies for those who want to call them out. Find more from Liv Boeree at www.livboeree.com.