In this Ask Jay segment, 4X Mr. Olympia Jay Cutler answers a fan question about Gaining Size on The Upper Back.
Cutler Nutrition, the Official Supplement Line of 4X Mr. Olympia, Jay Cutler!
Want To Get A Bigger Upper Back? Mr. O Has What You Need
Cutler Nutrition, the Official Supplement Line of 4X Mr. Olympia, Jay Cutler!
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