plank jack is a calisthenics and pilates exercise that primarily targets the abs and to a lesser degree also targets the calves, groin, hip flexors and shoulders ...more
plank jack is a calisthenics and pilates exercise that primarily targets the abs and to a lesser degree also targets the calves, groin, hip flexors and shoulders.
Learning proper plank jack form is easy with the step by step plank jack instructions, plank jack tips, and the instructional plank jack technique video on this page. plank jack is a exercise for those with a intermediate level of physical fitness and exercise experience. Watch the plank jack video, learn how to do the plank jack, and then be sure and browse through the plank jack workouts on our workout plans page!
