We live and perceive life primarily in the sagittal plane, but being strong and mobile in the frontal plane can help with conditions like ankle/foot pain, knee pain, hip pain, and even low back pain.
The lateral line includes muscles that are responsible for frontal plane motion. From the bottom of the ribs, this includes…
Quadratus Lumborum (QL)
Tensor Fascia Lata
The first video is one of the best lateral line stretches using a TRX or suspension trainer. The second video is a serious glute/calf/foot burner and is a great single leg balance exercise. Lastly is a great oblique/QL exercise!