Watch Online Free on Watchseries. Multi-sport athlete Kelly Vilarino found the challenge of kickboxing to be her next sport, after retiring from professional MMA boxing. With her twin sister Nicole, she teaches a weekly women's kickboxing class in Chandler, Arizona. Together, they teach healthy ways of stress relief and self-defense, while getting a full-body workout and building camaraderie. Women in the class tell a bit of their personal reasons for choosing kickboxing, in this uplifting, inspirational short documentary.