Dancing counts as exercise, so maybe this way you can trick yourself into it! Win 5 adult dance classes at the Koresh School of Dance. The Center City Philadelphia studio at 2020 Chestnut St. boasts two sprung-floor dance studios and large dressing rooms, with classes held seven days a week. Koresh offers more than 35 adult classes in a wide variety of movement instruction, including tap, ballet, jazz, modern and hip hop. The instructors are widely regarded as some of the best in the city and promise not to make fun!