CHICAGO, Jan 23, 2014 (BUSINESS WIRE) --CorePower, the natural fresh milk-based high protein drink, today became a national sponsor and the “Official Protein Drink” of the 2014Reebok Spartan Race, the world’s leading global obstacle race series. The partnership pairs two dynamic companies committed to providing athletes and active individuals with state-of–the-art tools and experiences designed to enhance sports performance.