Most runners are familiar with the big muscles involved in running, like quads, hamstrings, and glutes. But there are lesser-known, yet still important players that can influence run performance. One ...

QL stretches can help improve flexibility and relieve aches and pains while preventing new ones. The quadratus lumborum (QL) is a deep core muscle located in your back, which runs from the top of your ...

Quadratus lumborum pain involves discomfort in the muscle that is located deep in the lower back on both sides of the spine. The quadratus lumborum muscle starts at the pelvis and runs up to the ...