That said, he does appear to be shaken by the interaction, according to body language experts. One body language expert who spoke to HuffPost is confident the president heard the booing based on the many microexpressions that can be seen coming across his face throughout the video. Throughout the video, Trump has “very stiff body language posture with his arms close to his body,” said Patti Wood, a body language and nonverbal communication expert and author of “Snap: Making the Most of First Impressions, Body Language, and Charisma.”AdvertisementThis, Wood explained, shows the booing and negative motions from attendees are getting to him. Trump’s body language suggests that he was in a freeze response, she continued. “And body language is highly symbolic, so he’s pushing away, and then he’s wiping away the response from the crowd.”Getty Images Body language experts say Trump's reaction to being "booed" at a football game spoke volumes.