SILVER SPRING, MD – JUNE 18:
Dance instructor Lucy Bowen McCauley, right, leads her group of seniors in a variety of dance exercises during the Dance for Parkinson’s Disease class at the Maryland Youth Ballet on June 18, 2013 in Silver Spring, Md. Dance instructor Lucy Bowen McCauley has been teaching the dance class for patients with Parkinson’s disease for about five years. The dancing is said to be effective in helping with the symptoms of the disease. (Photo by Ricky Carioti/The Washington Post)