We're sorry, but online registration is not allowed for this activity. Group Exercise classes, Yoga & Pilates and personal training are available for full members of the facility. Please contact us during regular business hours for registration information. A martial arts-inspired cardio workout. Options will be shown for all fitness levels. This is a prerecorded class taught by a YMCA instructor that airs on-site at the branch. Category Exercise, Health and Wellness Location Aerobics Studio at West Chester Branch Instructor Jackie C.