General Nutrition Centers (GNC) is a Pittsburgh, Pennsylvania-based American commercial enterprise focused on the retail sale of health and nutrition related products, including vitamins, supplements, minerals, herbs, sports nutrition, diet & energy products.
CrossFit is a branded fitness regimen created by Greg Glassman[1] and is a registered trademark of CrossFit, Inc.[2] which was founded by Greg Glassman and Lauren Jenai[3] in 2000.[4][5] Promoted as both a physical exercise philosophy and also as a competitive fitness sport, CrossFit workouts incorporate elements from high-intensity interval training, Olympic weightlifting, plyometrics, powerlifting, gymnastics, girevoy sport, calisthenics, strongman, and other exercises.