Anxiety is the fruit of potential harm; fire or sunlight, or a new substrain of biomechanical doom.
Past research hints at a correlation between extent of brain injury following impact and the biomechanical forces at play.
biomechanics bi·o·me·chan·ics (bī'ō-mĭ-kān'ĭks)
The study of the mechanics of a living body, especially of the forces exerted by muscles and gravity on the skeletal structure.
The mechanics of a part or function of a living body, such as of the heart or of locomotion.