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We Recommend Our Varsity or Pro Model

Concentric training is important when preventing injuries and building muscle mass. These muscles act as shock absorbers that, when strong, can offset impacts and continual stresses. Iron Neck Varsity has a fixed level of rotational resistance while Iron Neck Pro provides you with the added ability to adjust that resistance up or down. This can turbo charge your workout and allows for greater strength gains as you increase the level of concentric training.