我们总以为"感到安全"是一种想法，但其实它是一种生理状态。Van der Kolk 在书里介绍了神经学家 Stephen Porges 的多重迷走神经理论（Polyvagal Theory）——它彻底改变了我对"社交"这件事的理解。
"Social engagement depends on being able to read faces and voices for cues of safety and welcome. The face-to-face system allows you to track the moods and intentions of the people around you — whether someone is safe to approach or needs to be avoided."
"As long as people are in a state of fight/flight, the muscles of the middle ear are tuned to hear sounds in the frequency range of predators, not human voices. This is why trauma survivors so often mishear what people say to them."
跑步的时候专注呼吸，瑜伽的时候跟着老师的声音走——也许这些都是在悄悄激活这套社会参与系统。不只是锻炼身体，是在重新学会"我在安全的地方"。