When doing undulation, first lift your chest up by contracting your muscles and then contract the muscles in your belly to bring the movement back down.<br />In Egyptian belly dancing, an undulation is a common movement that starts with a chest circle and ends with engaging the abs to push the lower back backwards .<br />SHAKIRA DANCE.<br /><br />To do the chest circle, youll need to isolate your chest in two different ways. Discover how to isolate your chest to properly do a chest circle with tips from a .