"Mirroring/body language in general. When you’re trying to connect with someone mirror their body language and keep eye contact. And when interacting with people, try to keep your posture straight and don’t close yourself off. Keep your body language open and relaxed and people will enjoy your company more and be more likely to trust you."
If THAT'S what you took from that, your inner criminal is showing.
Aren't you just an angry South Pole Elf??
Mattie spends her/his evenings yelling profanities at the blank wall.