Your Latissimus Dorsi (or “Lat”) is the one most powerful pulling muscles in your body. It helps dissipate shockwaves out of the spine, and it is the only muscle that connects the lower back directly to the arm. So, when it gets tight, it can wreak havoc on your low back and even your shoulder.
The Teres Minor is like a smaller version of your Lat. This little guy can become overactive, and try to override the big lats, which can cause big problems. Here’s a way to use the foam roller to keep these muscles behaving like they should.