• Stop talking or stop all movement
• Breathe deeply and rapidly
• Pale in the face and neck
• Tighten their lips over their teeth
• Furrow their eyebrows into a frown
• Break eye contact or make targeting glances
  (the eyes lead to where people are going or
  the actions they are going to take)
• Lower their heads and chins to their necks
• Clasp their hands or make fists
• Shift or drop their shoulders
• Rock back and forth
• Stretch