Kefir, a fermented milk drink made from probiotic bacteria, has been growing in popularity, and rightfully so. Just one cup of kefir contains 11–14 grams of “complete proteins,” which don’t occur naturally in the body. Dairy proteins are especially helpful for maintaining lean muscle mass and speeding up weight loss. While its tangy flavor may take some getting used to, it mixes well with fruit, cereal and whey protein.
found on buzzfeed.com