Herring is a fatty fish rich in omega-3s and creatine, as well as B vitamins. It’s also a top source of creatine. A 4-ounce ...

Creatine, a naturally occurring compound, boosts athletic performance by aiding energy production and muscle recovery.

The exact creatine content of foods is difficult to determine, says Rizzo, as it's not listed on nutrition labels or the U.S. Department of Agriculture nutrient database. "Studies show varying ...