GYROTONIC (also known as the Gyrotonic Expansion System or GXS) is an exercise system create by Juliu Horvath, an ethnic Hungarian born in Romania. Horvath, who was trained as a ballet dancer, sought asylum in the United States in the 1960s and developed the Gyrotonic system there, after an injured Achilles tendon brought his dance career to a halt. He began to practice yoga, and developed a system called "Yoga for Dancers", which eventually evolved into GYROKINESIS.