Gorilla Chin/Crunch
Core · Bodyweight
How to do it
Hang from a chin-up bar using an underhand grip (palms facing you) that is slightly wider than shoulder width. Now bend your knees at a 90 degree angle so that the calves are parallel to the floor while the thighs remain perpendicular to it. This will be your starting position.
Also works: Biceps, Back
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