Helen Mirren said this quote

Fresh from a costume fitting, where I had been posing in front of the mirror assuming what I thought was a strong position - arms folded, butch-looking...you know - I met with the woman in charge of Holloway police station. She gave me the most invaluable advice: never let them see you cry, and never cross your arms. When I asked why, she said 'because it is a defensive action and therefore weak.