By applying an external load in the form of chains around the posterior cervical spine, you subsequently fire the deep neck flexors and retractors that are almost always weak and underdeveloped for the majority of lifters. The chains create a feed-forward mechanism and activate the target muscles through a process called "reactive neuromuscular training," espoused by Gray Cook and Mike Boyle. By driving your neck muscles into protraction and a more pronounced forward head alignment, you engage the opposing muscles and correct any faulty posture. This exercise is another valuable tool you can add to your corrective training arsenal to correct common postural defects throughout the kinetic chain as alignment "up top" partially feeds positioning down below. – Travis Hansen
Wide-Grip Pull-Ups with Chains + Hip External Rotation back exercises with bands
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