About this exercise
A classic crunch performed with the knees bent and feet flat against a wall. The wall provides a fixed anchor for the feet, eliminating hip-flexor involvement and directing all the work to the abdominal muscles.
Crunch Bent Knee against Wall
Step by step instructions, muscle activation and variants for the Crunch Bent Knee against Wall.
EasyAbs
How to Perform
- Lie on your back close to a wall with your knees bent to approximately 90 degrees and feet flat against the wall
- Cross your arms over your chest or place your fingertips behind your ears
- Exhale and curl your upper body off the floor by contracting your abs, lifting your shoulder blades
- Hold briefly at the top and squeeze your abs
- Slowly lower your upper back back to the floor
- Keep your lower back lightly pressed toward the floor throughout the movement
- Repeat for the desired number of repetitions
Muscle Activation
Primary
Abs
Secondary
Core
Common Mistakes
Common mistakes content is coming soon.
About the Crunch Bent Knee against Wall
The Crunch Bent Knee against Wall is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.
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