BodyBuilding.com is an online shop for bodybuilding and fitness products including protein mixes, vitamins, and more. ### Affiliate Program Details For new affiliates, BodyBuilding.com offer an 8% commission rate on orders from new customers. They offer 3% on orders from existing customers. Coupon websites can earn 2%. They accept fitness and nutrition websites, as well as marketers with a strong social media presence or e-mail marketing platform.