Marshall O'Brien has been a chef for 15 years, and in 2012, he founded the Chef Marshall O’Brien Group, a team of nutritionists, chefs and researchers. The group works with a broad spectrum of clients, including city agencies, such as fire, police and public works, to improve energy, performance and safety. O’Brien has long been a proponent of using smart nutrition to improve performance and lead a healthier, happier life. Learn more at ChefMarshallOBrien.com.