Lying Crunch (straight legs)
Expert Advice
Exhale as you crunch up and keep your neck neutral to avoid straining it.
How-to-do Steps
- Lie on your back with your legs extended straight up towards the ceiling and your hands behind your head.
- Contract your abs to lift your shoulder blades off the floor, reaching towards your toes.
- Slowly lower back down to the starting position.
- Repeat for the desired number of repetitions.
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Muscles Worked
Lying Crunch (straight legs) primarily targets the Abs, with Strength mechanics using Body Weight. Understanding muscle activation patterns helps you focus on proper engagement and maximize training effectiveness.
Primary

Abs100%
Equipment
Body Weight

Exercise Type
Strength
Sets & Reps Guidance
Beginner3 x 12-15
Intermediate3 x 10-12
Advanced4 x 8-10
Frequently Asked Questions
What muscles does Lying Crunch (straight legs) work?
Lying Crunch (straight legs) primarily targets the Abs. It is classified as a Strength exercise performed with Body Weight.
How many sets and reps should I do for Lying Crunch (straight legs)?
For beginners, start with 3 sets of 12-15. Intermediate lifters can do 3 sets of 10-12. Advanced athletes can push to 4 sets of 8-10. Adjust based on your goals and recovery capacity.
Is Lying Crunch (straight legs) suitable for beginners?
Yes, Lying Crunch (straight legs) is rated as a beginner-friendly exercise, making it an excellent starting point. Focus on mastering proper form before increasing intensity or load.