This book offers excellent guidance on using one's own body language to change opinions of others and stay open to changing your own opinions. The teachings here are a great complement to learning how to detect what others' body language is telling you.
Bowden's recommendations can be experienced immediately and viscerally. For example, he suggests saying "I love you" while placing your hands at each of the three different planes of the body which he terms grotesque, truth, and passion and noting how the feeling changes at each plane. I tried this, and found it really does! He also presents the valuable YesStates and NoStates and how to quickly get into either, depending upon your purpose. I put the YesState into practice and can attest to the immediate emotional and attitudinal shift.
Especially valuable is the section starting on page 96 about how all the body and all its various systems and functions are involved on what appears on the face. This reinforces how complex it is to read a person's expression.
I first learned about Bowden's expertise on body language through watching him on YouTube's The Behavior Panel (of which I'm a huge fan). Bowden's advice and know-how are critical for anyone, whether you are interviewing for a job, suggesting a purchase to your spouse or life partner, or presenting or selling. He is smart, funny, jovial, cajoling, "big," a term he uses in this book. His expression is big--big in gesture, expression, and his frequent emphasis of certain words and phrases, using his voice so that they linger and make it clear we should notice them. I'm not a fan of big unless I'm star gazing or watching fireworks. His voice, however, is one among four, and his style is a complement to the others' varying modes of expression.
I'm giving the book a 4 instead of a 5 because I felt it could have had a better editing. Italics are overused as a stand-in for the way the spoken voice can emphasize. There are some sentences that, to me, are weirdly constructed. For example, on page 117: "My new models have evolved from older ones by masters of applied psychology of movement such as Rudolph Laban and his protege, the great acting trainer to amongst others Sean Connery, Pierce Brosnan, and Anthony Hopkins; Yat Malmgrem." I had to stop and puzzle until I realized the sentence structure places Yat Malmgren's name far away from what it modifies, the word protege. This may be a sentence structure Bowden is fond of; he uses it in his intro tagline on The Behavior Panel, placing "including leaders of the G7" far away from what it modifies. For me this causes a head-scratching moment but maybe not for everyone else. Bowden sometimes but not always cites sources, such as when he notes history Roman crucifixions placed the arms in a Y instead of a stretched-out letter I, as opposed to the more common cross. The book also uses some outdated material, for example, Dr. Albert Mehrabian's theory about how little content really matters in communication, but then again, the book was published in 2010. The publication date may also account for the inclusion of a kind of handshake Bowden advocates where you gently turn the other person's hand over and gently pull it toward your mid-section. Hm...I would not like anyone doing that to me. There are also a number of other punctuation errors and typos.
My recommendation: just stay focused on this book's wealth of knowledge, training, and tips about not just communicating but connecting and enjoy the theatre along the way. Oh, and also I suggest staying open to changing your own opinions! I am on that path now and hope I achieve what Bowden suggests is possible.