Ori Tahiti, the traditional Tahitian hula dance, emphasizes intense hip movements and strong rhythms. The upper body must maintain proper posture and stay in sync with the beat, while the abdominal muscles are strengthened. Slightly bent knees help tone the leg muscles. Hand movements follow the lyrics' meaning, training coordination and balance, sculpting the waistline, and working muscles that are often underused. The gentle swaying of the hips helps soften the spine, which tends to stiffen with age, and promotes blood circulation in the abdominal and lower back areas.