The trapezius muscle mass (or traps) are one of several more substantial muscles on the back. The middle and lower traps originate and insert along the C7-T12 vertebrae on the lateral 3rd with the clavicle, the acromion process, as well as backbone with the scapula. (Depending on your hip mobility https://dumbbellsetandrack89900.alltdesign.com/top-latest-five-hammer-strength-dumbbells-urban-news-52518560