Tag: low back injury

[Music] There may be no muscle more important  to the biomechanical functioning of   the human body than the psoas. Yet it  is also one of the least understood,   and poorly trained muscles in large part because  it's located so deeply inside...

[Music] There may be no muscle more important  to the biomechanical functioning of   the human body than the psoas. Yet it  is also one of the least understood,   and poorly trained muscles in large part because  it's located so deeply inside...