Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
From an inverted hang, lower the body slowly until it is horizontal and facing up, arms straight and the body in one line from shoulders to toes. Hold, then return to the inverted hang.
Pull the shoulders down and back to hold the line. Bend the arms slightly at first to control fatigue. Squeeze the glutes so the hips do not sag.
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