ST LOUIS, MO - OCTOBER 09:  Democratic presidential nominee former Secretary of State Hillary Clinton (R) speaks as Republican presidential nominee Donald Trump looks on during the town hall debate at Washington University on October 9, 2016 in St Louis, Missouri. This is the second of three presidential debates scheduled prior to the November 8th election.  (Photo by Rick Wilking-Pool/Getty Images)
What does Trump's body language during debate mean?
02:13 - Source: CNN

Story highlights

An expert appeared on CNN's "New Day"

She said Trump movements looked like a "pre-assault indicator"

CNN  — 

Donald Trump paced and loomed behind Hillary Clinton at times during Sunday night’s second presidential debate – a decision possibly driven by stress during the intensely bitter event, according to body language expert Janine Driver.

“He’s decreasing stress by doing all that movement,” Driver said of Trump’s behavior on CNN’s “New Day” on Monday.

And Driver noted that it was Clinton’s own “strategic” decision to range freely around the stage and position herself in front of Trump when she was answering questions that contributed to him appearing to lurk behind her because, Driver noted, he had nowhere to go.