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. This mat work class focuses on the body's core stability. Enhance your control, stability, coordination, endurance, balance, strength and flexibility. This is a prerecorded class taught by a YMCA instructor that plays on-site at the branch. Category Group Exercise Location Group Ex Studio at Upper Main Line Branch Instructor Jackie Canan