My most recent read was What Every Body Is Saying, a body-language manual written by former FBI agent Joe Navarro. Joe teamed up with a psychologist to write his book, which was awesome for me because it made the book that much more accessible as I was able to understand the principles within the context of a mental framework I’ve already established (And one that I’m endeavoring to impart upon this blog’s readership): the limbic system/amygdala is really important in understanding human behavior. The neocortex/”thinking brain” is layered on top of the limbic system, and although it can modulate the limbic system, the signals from the limbic system affect our behavior immediately in real-time; any modifications to the automatically externalized signals sent by the limbic system are either consciously directed or subconsciously directed from the depths of our thinking-minds.
This is really, really important. If we want to have a good understanding of body language, and really learn it, then we must understand the theory before we dive into the juicy practical examples. So, here is a quick refresher:
What is the Limbic System? What is the Neocortex? What is the difference between the Limbic System and the Neocortex?
The human brain evolved over a long time. The worm fish, c. elegans, is the animal with the fewest number of neurons: 302; this should give you some perspective on our humble origins. Of course, some creatures like sponges have 0 neurons, but you get my point, neural architecture can be very simple. Through the course of evolution, animals developed the brain stem, which regulates things like breathing, status and aggression; this part is called the “reptilian brain” (or “lizard brain” in Seth Godin terms) and is attributed to a phylogenetic advancement made by reptiles.
Animals later developed the “limbic” brain (limbic is latin for curved, which is the shape of the neural regions) system, which serves by providing emotions and a sense of reward. This is why it’s sometimes called the emotional brain. The limbic system or limbic brain is sometimes called the mammalian brain, but that’s a misnomer. Modern research suggests that the common ancestor of lizards and mammals had a limbic system.
Finally, awesome beasts that they are, mammals developed the top layer of their brains – the neocortex or “thinking brain”. The neocortex is where we plan things in the long-term and where we think thoughts. However, unless you’re an extremely enlightened individual and have made a daily practice of meditation for a very long time, your thoughts will be almost exclusively driven by impulses sent by your limbic system.
I’d like to interrupt this fact-filled paragraph with a fun picture of whales and a fun fact:

Fun fact: Whales, mammals that they are, utilize their neocortex well. They teach, learn, cooperate, scheme, and grieve. Yes, whales scheme. And they live to be up to 70 years old. Take that in combination with the idea that most communication is non-verbal (to be discussed in another article…), it prompts some interesting questions about harmony and the ethics of zoo (for another article).
Okay, now that we’ve established that the brain is layered, and most of our emotions come from the limbic brain, we learn a new fun fact: our body is intimately linked to the emotional signals sent by our limbic brain. The limbic brain happens to be in charge of the “fight or flight” response, and our body reacts instantly to the signals sent by the amygdala. It turns out “fight or flight” is a misnomer as well, though: “fight, flight, or freeze” might be more accurate. Fight foes, flee from predators, and freeze to avoid detection by enemies.
Got the theory? Proceed. Confused by the theory? Ask a question in the comments, and I’ll edit the post to explain better.
OK, time to dig in. As I see it, there are three important principles in understanding body language:
Principle #1 Since we are emotionally motivated, and all our behavior is rationalized (remember, the limbic system is underneath the neocortex), our bodies are compelled to advance toward objects of interest and avert our gaze/bodies from objects of disinterest.
Principle #2 When we experience negative emotions (stress), we engage in soothing behaviors.
Principle #3 The better we feel, the lighter we are; the worse we feel, the heavier we are.
Elaboration of Principle #1, Approach & Aversion
If our limbic system tells us that we don’t like something, we’re going to want to flee. Therefore, our feet will orient in the direction away from the offending object. However, if we like something, our feet will orient in the direction towards the desirable object.
(For the purposes of this discussion, humans and objects might as well be considered interchangeable, though to the brain, I think that we actually treat things that we perceive to be alive, differently. This explains why the Roomba was such a successful product; people bonded with it due to its lifelike characteristics. You might recall the humorous clip from Arrested Development where Buster feeds a cheese poof to a Roomba, sighing empathetically, “ohh, you’re hungry.”)
Anyway, back to the feet: This is huge! If we really like someone, we’re going to orient our feet towards them; if we are feigning social politeness, we are going to twist our waist & twist our facial expression but not reorient the direction of the feet. And if we really don’t like, we’re going to turn our back, so we can get away. (There are other reasons for back-turning as well; a high status animal [e.g. a dog, a human] may turn his back to a group, signalling that he is not threatened by the group, doesn’t perceive them as a threat, and their (body) language is not germane to his intentions).
Indeed, ex-agent Joe Navarro says that the feet are the best tell for reading someone’s emotions, and I think this is a brilliant insight. With practice, we can mask our facial expressions; e.g. we’re trained by our parents to make friendly smiles at people we don’t like. (though we can’t mask microexpressions – a post on those soon as Ekman’s book is on my to-read list) However, it’s really rare to be able to mask your feet movements. Bouncy feet mean that you’re excited (though bouncy legs are more likely a form of soothing); feet oriented differently from your torso suggest that what you’re communicating is not really what you feel.
Even though our feet play a principle role, and are one of the best honest indicators of body language, there’s one more thing I’d like to address: when addressing an object that we like, we will try to expose ourselves to it as much as possible. This means orienting our feet to it, stepping closer to it, opening our eyes/dilating our pupils so we can see more of it.. conversely, when we don’t like something as much or it makes us uncomfortable, we may fold our arms across our chest, or subconsciously build a barrier between us and the object (such as by buttoning a jacket, or placing an object in between us and the offensive stimulus). One other thing: the interplay between cognitive sensation/perception of experience, and body language, is FASCINATING. If you are made uncomfortable by something, you may put on a jacket in order to create a barrier, but you may then rationalize that “you’re just cold”. By the way, if you want a more detailed inventory of body language behaviors, get the Navarro book (the one I read) or the Pease book (another one I own, but have yet to read); this post is more inclined towards theory.
Elaboration of Principle #2, Soothing
When we experience stress, we subconsciously try to get rid of it as soon as possible. This manifests itself in a number of behaviors that we employe to “soothe” ourself: touching the face, touching the front or back of our neck, “wiping” our hands on our legs, shaking our legs, licking our lips, rubbing our hands together, smoking weed, drinking alcohol, eating food, smoking a cigarette. When someone engages in a soothing behavior, you can bet that they just experienced a spike of stress. Although the present moment environmental stimuli generate most of emotions experienced, our neocortex can and does modulate emotion, so their stressful spike may have been caused by a thought completely unrelated to the situation at hand. (If we want to stop overeating or quit smoking, we may wish to try to restructure our life to reduce the amount of stress and negative emotions created so we have less to soothe.)
Elaboration of Principle #3, Gravity
When we are happy, we will sit upright, we will wave our hands animatedly, we will extend our arms to the sky, we will skip. When we are sad, we are more likely to be hunched over, small, with arms dragging, folded across the chest. Indeed, it’s as if when we are sad gravity weighs on our body, and when we’re happy we are lighter than air and our appendages can’t help but float up. A finger raised to the sky indicates positive emotions, a finger pointing towards the floor indicates negative emotions.
Why is this? If we are happy, our limbic system is telling us that there are no potential threats in the environment; we can be animated and we will not have to risk being seen by predators or foes. We can draw attention to ourselves without fear. The converse is true as well. When we are sad, we want to remain small and non-threatening.
I’ll leave you with one piece of advice. Be careful when reading people. You can use clusters of body language clues to elucidate intentions, but be careful. You don’t want to be Larry David.
This is one in a series of ZacharyBurt.com posts on emotions and body language. Look forward to future posts about group emotions, mimicing/isopraxy, social norms, and microexpressions. The main book I drew from for this article is What Every Body is Saying by Joe Navarro.