How does the body give direction to our thoughts?

Very often the body goes the same way, and thoughts are carried away in a completely different direction.
Have you ever had a chance to communicate with a person and feel that he is mentally somewhere far away, despite the behavior that is quite adequate to the situation? If you take a photo at such a moment, you will notice two points on it. Firstly, the head of the interlocutor will be turned to you, and the expression of the face will quite correspond to a friendly conversation. Secondly, the interlocutor’s body and feet will be turned away from you, either to another person, or towards the exit. The direction of the body and the feet of the interlocutor indicate where he would prefer to be at the moment.
The man on the right makes it clear that he wants to leave.
In the picture you see two men talking in the doorway. The man on the left is trying to keep the interlocutor's attention, but he wants to move in the direction his body is turned, despite the fact that his head is turned to the interlocutor. A mutually interesting conversation for both can take place only when the two interlocutors turn to face each other.
During a personal conversation, a person who wants to end the conversation or just leave is unconsciously turning towards the nearest exit. If you are in this situation, it means that you need to either do something to interest the interlocutor, or to complete the conversation on your own initiative, without losing control of the situation.