The human brain is encased in a rigid skull and covered by a muscular scalp, which is surrounded by three layers of membranes and floats in a protective cushion of cerebrospinal fluid. Though protected, brain trauma can occur with sudden acceleration or deceleration within the cranium. Control of head stabilization is one important line of defense for protecting the brain from perturbation. During activity it remains relatively stable as we integrate information about the head and body from our eyes, vestibular system and proprioceptors of the neck. For athletes involved in any sport with an associated head trauma risk protecting the brain from excessive subconcussive forces through strength training head and neck musculature for bracing is the first job of a strength and conditioning coach.
The Pendulum 5 Way Neck Machine