Lateral Spinal Opening We all know how to bend over and backwards, but the lateral movement of the spine is relatively unknown. So important to help the spine maintain its flow of synovial fluid, as well as opening up the lateral areas so that you remain flexible and supple. This also builds strength in the lower body, especially the lower back as you move the upper body back and forth. This exercise is repeated four times each side, alternating from side to side. This exercise laterally flexes the spine, stretching one side while compressing the other. Side bending is not commonly performed as part of the activities of daily living, so range of motion in this plane (coronal plane) is often restricted.