Online registration may not be allowed for all activities. To enroll into a group exercise class, please reserve your spot via our mobile app [https://ymcagbw.org/mobileapp#faq-question-949250480]. Please contact us during regular business hours for registration information. CORE is a workout designed to tone your body and improve your core strength. This is a prerecorded class taught by a YMCA instructor that plays on-site at the branch. Category Exercise, Health and Wellness Location Group Ex Studio at Upper Main Line Branch Instructor Jackie Canan