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Crunch (on bench) exercise demonstration - starting position (step 1 of 2)
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Step-by-step demonstration of the Crunch (on bench) exercise showing proper form and technique

Crunch (on bench)

Target Muscles

Equipment Required

Exercise Type

Reps Only

How To Do

Lie on a flat bench with your knees bent, feet secured, and hands lightly behind your head or crossed over your chest. Engage your core and curl your upper body forward, lifting your shoulder blades off the bench using your abs. Avoid pulling on your neck and lower back down with control.

Step-by-Step Instructions

  1. Begin by lying on a flat bench with your knees bent and your feet secured under the padded rollers or a stable surface to prevent movement.
  2. Place your hands lightly behind your head or cross them over your chest. Avoid pulling on your neck to prevent strain.
  3. Engage your core by tightening your abdominal muscles.
  4. Slowly lift your upper body off the bench by curling your torso forward. Focus on using your abdominal muscles to perform the movement rather than your neck or shoulders.
  5. Continue curling upward until your shoulder blades are off the bench and you feel a strong contraction in your abs.
  6. Pause briefly at the top of the movement, maintaining tension in your core.
  7. Slowly lower your upper body back down to the starting position, keeping control throughout the descent.
  8. Repeat for the desired number of repetitions.

Explore more abs exercises or bench exercises in our exercise library.

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Frequently Asked Questions

What muscles do bench crunches target?
Bench crunches primarily work the abdominal muscles, focusing on the rectus abdominis. They also engage the upper abs, lower abs, and obliques for a more complete core workout.
Do I need a bench for crunches or can I do them on the floor?
While a bench allows for a greater range of motion and can intensify the workout, you can perform crunches on the floor using a mat. The bench variation can be substituted with a stability ball or decline bench to change difficulty.
Are bench crunches good for beginners?
Yes, bench crunches can be suitable for beginners if performed with proper form. New exercisers should start with fewer repetitions and ensure their neck and lower back are supported to avoid strain.
What are common mistakes to avoid during bench crunches?
A common mistake is pulling on the neck, which can cause strain. Avoid using momentum and focus on controlled movements driven by your core muscles, keeping your lower back stable against the bench.
How many sets and reps of bench crunches should I do?
For general core strength, aim for 2–3 sets of 12–20 repetitions. If your goal is endurance, you can increase the reps while maintaining proper form throughout each set.
What safety tips should I follow when doing bench crunches?
Secure your feet to prevent slipping and maintain a neutral neck position to reduce strain. Always move in a controlled manner and stop immediately if you feel pain in your lower back or neck.
Are there variations of bench crunches to make them harder or easier?
To make bench crunches easier, keep your range of motion smaller or reduce the number of reps. To increase difficulty, try holding a weight plate across your chest or performing decline bench crunches for added resistance.