However, when folks are in stressful situations this turns up the volume on emotions and body language signals.
This is the sophisticated adult version of the handsover-both-ears gesture used by the young child who wants to block out his parent's reprimands.
Either the danger has passed or they think they got their point across.
This means keeping good posture until they start to get more comfortable with someone.
Whatever it takes to look better for you.
Maybe snuggle into that space between his shoulder and neck.