Muscle outlines from Body Muscles by Ivan Vulović, Apache 2.0 — regrouped and recoloured for Muscle Train.
Sit on the ab machine and adjust the lever to your height. If the machine has a support pad then secure it to your upper chest. Different machines vary in their function so there’s no one way to instruct on the setup. Then, grab the handles and crunch forward while contracting your abs. Depending on the machine, your feet may be lifted up while you crunch. Exhale during this portion of the exercise. Now, slowly lift your torso back up until it’s erect. Repeat for the desired number of reps.
Start light and focus on proper form before adding weight. Avoid hyperextending your back; instead, contract your abs throughout the movement. This exercise mainly targets the rectus abdominis and secondarily the obliques.
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