Single-Arm Cable Crunches
Primary Muscles Worked: Like the ab wheel, this works the abdominal muscles, the serratus, and obliques.
Why I Like It: Although this is still working the abdominus, I feel more emphasis on my obliques and serratus.
How to: In either a standing or kneeling position, grab a single handle for the cable machine, using an overhead pulley. Hold the handle to the side of your head, just slightly in front of you. Make sure to keep your elbow out in front of you. The more your arm is in front of you, the more you’ll feel this working the serratus.
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