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Beginner
- Difficulty
- Beginner
- Movement type
- Strength
- Primary muscles
- Abs
- Secondary muscles
- Obliques Hip flexors
- Equipment
- Bodyweight
Crunch (Straight Leg Up)
4 steps Updated 29/08/2026
Crunch (Straight Leg Up) is a bodyweight exercise targeting Abdominals (Rectus Abdominis).
Step by step
How to perform it
- Begin by lying flat on your back with your legs extended straight up towards the ceiling. Keep your feet together, and your arms extended straight above your chest.
- Engage your core and lift your shoulder blades off the floor, reaching your arms towards your toes.
- Hold the crunch position briefly, squeezing your abdominal muscles at the top.
- Lower your shoulder blades back to the floor with control, keeping your legs extended upward. Repeat the movement for the desired number of repetitions.
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Variations and related exercises
3-4 Sit-Up
45 Degree Bicycle Twist Knee to Elbow
45 Degree Bicycle Twisting
45 Degree Bicycle Twisting Crunch
Last updated: 29/08/2026
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Crunch (Straight Leg Up)
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