@pzmyers They're all clenching their hands.
http://www.psychmechanics.com/2015/05/body-language-clenching-and-clasping-of.html
> This gesture is usually done when a person feels that they are failing to convince the other person or are anxious about what they saying or hearing.
@pzmyers Oh don't tell me is it the manspreading? 😄
@Guide42XYZ That's interesting, I hadn't noticed. I'd looked a little lower.