Here is Jessica Marie Salvaggio getting her shoulder girdle/ lats stretched out, Zygmunt Smalcerz style.
If you don’t have a Zygmunt available you can recreate the experience by lying on a foam roller while holding a weight with your extended arms.
Check out Mobility 101 for more mobility awesomeness.
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Photo by Holley Mangold (thanks for letting me post it Holley).