The head can send a wide variety of body language signals. A lowered head can be a defensive posture that occurs as a result of a perceived threat. Touching the face is often seen as a sign of anxiety and people have regular places they touch when they are worried. Our heads are quite heavy, so when we are tired we may use our hand and arm to prop it up. Sometimes when we are thinking, we may also prop up the head.
我们的头部可以发送各种各样的身体语言信号。低着头可以代表对“威胁”的自我保护姿势。有些人在碰到担心忧虑的事情的时候，会触摸头的某一部分，这就显示了他们焦虑情绪的迹象。我们的头部是相当沉重的，所以当我们累了的时候，我们会习惯用我们的手和手臂来支撑它。当我们在思考问题的时候，我们可能也会托着下巴来支撑头部。
