Amy Cuddy, a Harvard psychologist, has devoted her studies to the impact body language has on your confidence, influence, and, ultimately, success. Her biggest findings center on the powerful effects of positive body language. Positive body language includes things like appropriate eye contact, active engagement/listening, and targeted gestures that accentuate the message you’re trying to convey. Studies show that people who use positive body language are more likable, competent, persuasive, and possess higher amounts of emotional intelligence .

Here’s how it works:
1. Positive body language changes your attitude. Cuddy found that consciously adjusting your body language to make it more positive improves your attitude because it has a powerful impact on your hormones.

2. It increases testosterone. When you think of testosterone, it’s easy to focus on sports and competition, but testosterone’s importance covers much more than athletics. Whether you are a man or a woman, testosterone improves your confidence and causes other people to see you as more trustworthy and positive. Research shows that positive body language increases your testosterone levels by 20%.

3. It decreases cortisol. Cortisol is a stress hormone that impedes performance and creates negative health effects over the long term. Decreasing cortisol levels minimizes stress and enables you to think more clearly, particularly in difficult and challenging situations. Research shows that positive body language decreases cortisol levels by 25%.

4. It creates a powerful combination.
While a decrease in cortisol or an increase in testosterone is great on its own, the two together are a powerful combination that is typically seen among people in positions of power. This combination creates the confidence and clarity of mind that are ideal for dealing with tight deadlines, tough decisions, and massive volumes of work. People who are naturally high in testosterone and low in cortisol are known to thrive under pressure. Of course, you can use positive body language to make yourself this way even if it doesn’t happen naturally.

5. It makes you more likable. In a Tufts University study, subjects watched soundless clips of physicians interacting with their patients. Just by observing the physicians’ body language, subjects were able to guess which physicians ended up getting sued by their patients. Body language is a huge factor in how you’re perceived and can be more important than your tone of voice or even what you say. Learning to use positive body language will make people like you and trust you more.

6. It conveys competence. In a study conducted at Princeton, researchers found that a one-second clip of candidates for senator or governor was enough for people to accurately predict which candidate was elected. While this may not increase your faith in the voting process, it does show that perception of competence has a strong foundation in body language.

7. It improves your emotional intelligence . Your ability to effectively communicate your emotions and ideas is central to your emotional intelligence. People whose body language is negative have a destructive, contagious effect on those around them. Working to improve your body language has a profound effect on your emotional intelligence.

Bringing It All Together
We often think of body language as the result of our attitude or how we feel. This is true, but psychologists have also shown that the reverse is true: changing your body language changes your attitude.
Have you felt the impact from changing your body language? Please share your thoughts in the comments section below, as I learn just as much from you as you do from me.