The machine crunch is a machine-based exercise targeting the abdominal
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adonisfitness
The machine crunch is a machine-based exercise targeting the abdominal muscles It involves sitting upright in the machine and curling the torso down toward the chest against some pre-set level of resistance On some machines the knees also curl up torward the torso Crunch machines usually use extra resistance in the form of selectorized weight stacks or plate loading and are often performed for moderate to high reps like 8-12 reps per set or higher as part of the ab-focused portion of a workout