[Please see video #9 Introduction in previous post before viewing this & all other videos]

The previous stretch program was the Glutes & from that stretch we transition to the quadratus lumborum (or QL) & the latissimus dorsi (or Lat). This stretch is found in the book "Stretch to Win" by Ann & Chris Frederick on page 126.

The QL is a short, square muscle that connects to the last 2 ribs & to the crest of the pelvis. It is often an undiscovered source of low back pain & is many times also responsible for a shortened leg if tight & contracted.

The Lats are the only shoulder muscle that attaches to your back & is often ignored in low back rehab despite its anatomical importance. Including it in stretches for the hip & back provide the link to the upper body that is crucial for a complete Core 4 program of stretches.