Drop in for this short burst of beneficial exercise! For 15 minutes straight, you will concentrate on the core of the body. Think of training your powerhouse, the muscles that keep you standing up all day, the muscles of the trunk, your abs, back and many more. Multifidi? Yes, you will be training them. Pelvic floor, glutes, extensors, obliques, diaphragm: yes, all of it! For PJCC Center Members. Registration required in MyPJCC.