Ergogenic refers to something that increases an individual's ability to perform physical work or exercise. It is a term used in sports and fitness to describe substances, nutrition, or training methods that can enhance energy levels, endurance, strength, or performance. Ergogenic aids include caffeine, creatine, amino acids, vitamins, minerals, carbohydrates, and proteins. These substances are believed to improve the body's ability to produce energy, recover faster from workouts, or increase muscle mass.