To do this stertch the stretcher is prone with their arms outstretched and externally rotated, like in a diving position. This is the lats end of range position. The partner grasps the stretchers wrists and directs the stretcher to pull against the partner internally rotating their arms and engaging the lats bilaterally. After this isometric pull the stretcher should relax and breathe in deeply. On the exhale the stretcher should attempt to reach further forward and rotate their arms more laterally in order to deepen the stretch.
Information obtained from McAtee, R. & Charland, J. (1993) Facilitated Stretching
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