Weightlifting (Olympic style) is a sport in which competitors attempt to lift heavy weights mounted on steel bars called barbells, the execution of which is a combination of power, flexibility, concentration, skill, will power, discipline, athleticism, fitness, technique, mental and physical strength. The term "weightlifting" is often informally used to refer to weight training. Olympic weightlifting trains the athlete for functional strength, utilizing the body's major muscle groups. For this reason, the Olympic lifts (or simplified versions such as the power snatch or clean) are extensively used in training for other sports such as American Football