Digestive System hoped i helped in some way.
In some places that could b true
-Stress
-PTSD mental disability (if they saw something disturbing)
-They could be injured (a telephone pole hit em, etc.
-They could not have sufficient nutrition sometimes (shortage of food)
-They would be in shortage in water so that is a big problem because they wouldn't be getting their daily amount of water intake (8 cups)
Answer:
i say flexibility and stretching any type of that cus if u don't your stiff and can break anything easily