The Chest Slides, also called Ribcage Slides, front, back, right and left are foundational movements of belly dancing. When combined with other movements, they help build more intricate movements like the horizontal chest circle and undulation. Tips: Like with all upper-body work, be sure to keep the lower torso engaged and keep the tailbone slightly tucked. Be sure to keep the chest upright during your chest slides, as opposed to tilting the upper torso, lifting one shoulder higher than the other. The shoulders should remain neutral and the same height. Be careful not to hunch the shoulders forward as you slide back nor reach unnaturally backward with the shoulders as you slide forward.