Finally it all stopped. Thank God, you have escaped with minor injuries. What you had just undergone is how stress works and how we cope with it. This is an example of a stress that was triggered by events or stimuli from outside your body. In the example cited above, when you think of the accident, you get stressed.
Some people get a stress attack when they drive near the spot of the accident.
This type of stress is called mind stressor. The origin of the stress, in this case, is within you. You go home finally. You are so upset you cannot sleep. Your muscles are very tense.