Say you fall and land on your bottom. How the fall later affects you depends on the Vector of Impact.
You may fall directly on your bum and be sore for a short time, maybe a few days or a few weeks. The Vector of impact goes straight up from the base of your spine.
The energy from the fall travels up the spine to the neck and head. Three months or a year from now, you may suddenly start getting headaches. You wonder why your headaches came “out of the blue”.
However, the Vector of Impact may be off to one side as in a fall to the right hip. The Vector may cross the midline of the body.
Shown below, the Vector of Impact lands in the left shoulder. That means the energy of the fall is stored in the muscles of the opposite side.
A vector has a magnitude and direction. If the magnitude isn’t very great, you may not notice very much. However, if the magnitude is larger, you may be sore. Where you are sore depends on the angle, the direction of the vector of Impact. The energy from the impact travels through the body, leaving threads of tight muscles in its wake. I can be sense and release these threads.