The muscles of the neck are primarily diagonal fibers, which allows for greater range of motion across all three movement planes: Coronal, Sagittal & Transverse.
Working in pairs on the left and right sides of the body, these muscles control the flexion and extension of the head and neck. Working individually, these muscles rotate the head or flex the neck laterally to the left or right. Neck muscles contract to adjust the posture of the head throughout the course of a day and have some of the greatest endurance of any muscles in the body.
Strengthening the neck muscles along all three planes of movement has direct benefits in reducing head acceleration and mitigating forces before they injure the brain.
Coronal Plane: Eccentric lateral flexion to absorb impacts to the side of the head
Sagittal Plane: Eccentric neck flexion to absorb impacts to the front/back of the head
Transverse Plane: Eccentric neck rotation strength to absorb impacts to the jaw