It is true that wellness is achieved when someone is at their best in all 6 dimensions of health.
I believe that's a long-term goal.
Answer:
A sensor monitors the body's condition > The control center interprets the data and decides what action is necessary > the effector causes and action that returns the body to stable condition
You should hold a stretch for as long as it does not become too painful for you. Stretch as much as your body needs but not too much because, it could tear up your muscles and tendons. This is the best answer i could give you.
