A trained Zumba instructor since 2009, Abby Estilong skillfully ushers pupils through the fitness technique's energetic choreography, set to a spirited soundtrack of fast-paced rhythms and latin-music beats. During each class, she engineers a series of lively dance movements that help oust lollygagging calories and yield svelte, toned physiques. Aside from standard Zumba, Abby also forges lean bods during Aqua Zumba and Hot Hula classes inspired by the traditional dances and ThighMaster machines of Pacific Island cultures.