Once a discipline for training soldiers for combat, gymnastics has evolved into a sport that emphasizes not only strength but also artistry and grace as well. Modern gymnasts compete with the lofty goal of someday making it to the Summer Olympic Games, where gymnastics are one of the most popular events. Athletes from countries like Russia, Romania and Japan dominated the sport through most of the 20th century, with stars like Olga Korbut, Nadia Comaneci, Vitaly Scherbo and Kohei Uchimura. American stars have emerged more recently, following the triumph of Mary Lou Retton at the 1984 Olympics in Los Angeles. Since, athletes like Paul Hamm, Shannon Miller, Carly Patterson and Gabby Douglas have followed in her footsteps. Fans continue to be drawn to the incredible strength, agility and grace of these athletes. Each book in the Inside the World of Sports series takes you from the very beginning of a sport to a look at its future. Inside these pages, learn more about gymnastics greatest moments, iconic athletes, and what the future holds for the sport.