Not to stray too much from the direct question..
Fight or flight can be activated. It can appear like attention seeking and sometimes it certainly is. Other times it's not even something to think about as in I think I should leave now. You are in the parking lot before you stop to really realize you left. For me it was embarrassing as I am a shy introvert and do not want that type of attention bolting through a building and group of people brought.

Growing to a point to be able to talk about those feelings is very useful, recognizing triggers and ways to deal better with them helped me too.