The patented Core 4-Way Neck is a biomechanically precise 4-way neck machine that trains the flexion and extension muscles of the neck to allow for improved range of motion. It both stretches and strengthens the cervical spinal muscles. This allows for decompression of the upper spine and promotes increased Omni-directional strength and flexibility of the entire neck. The Core 4-Way Neck is based on the superior biotechnology of the MedX Medical Neck Extension machine now being used in spinal rehabilitation facilities around the world.