You would not want to over work your body, you should start slow, then work your way up. If you work to hard at the beginning, you will get cramps, and you will probably be dehydrated. It is important to start slow, And improve slowly. That should give you the answer.
There are several types of events that are associated with PTSD. Bombings, earthquakes, assaults, disasters and accidents. These are just a few.
