
The Serratus (sometimes known as the ‘boxers‘ muscle) is perhaps best thought of as the ‘3 fingers‘ on your side, below each arm. Its job is to hold the scapula (shoulderblade) against the thoracic wall (rib cage). The Serratus Crunch comes in two main forms, each of which is described below. Hanging version This is the one described in Arnold’s book, and the one most likely to find a place in my own routines. Hanging from a chinning bar (using a shoulder-width, pronated grip), simply raise your legs directly to one side, and then the other. Lift them as high as possible, and try to keep the movement slow and under control. Lying version

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