Machine Crunch
MachineStrength
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The machine crunch is a strength exercise performed on an abdominal crunch machine, where you sit with pads against your chest and contract your abs to curl your torso forward against resistance. Its primary purpose is to isolate and strengthen the rectus abdominis for improved core stability and definition. It mainly targets the abs, requires an ab crunch machine (not bodyweight), and benefits beginners to intermediates seeking controlled abdominal training without free weight demands.
How to Perform Machine Crunch
- 1Sit on the floor with knees bent and feet flat on the ground, hip-width apart.
- 2Place hands lightly behind your head or crossed over your chest to avoid pulling on your neck.
- 3Engage your core by drawing your belly button toward your spine; keep your lower back slightly rounded or neutral.
- 4Inhale to prepare, then exhale as you slowly crunch upward, lifting your shoulders and upper back off the floor while keeping your lower back down.
- 5Pause briefly at the top with abs contracted, feeling the squeeze in your midsection.
- 6Inhale as you slowly lower your upper back and shoulders back to the starting position with control.
- 7Repeat for desired reps, maintaining steady breathing throughout.
- 8Key form tips: Keep movement slow and controlled—avoid using momentum or jerking. Do not pull on your neck; let abs do the work. Common mistakes: Arching the lower back or lifting too high (beyond shoulder blades).
