What muscles do Twisting Crunches with arms straight work?

This exercise primarily targets the obliques and upper abs, helping define your waistline and strengthen core rotation. It also engages the lower abs as a secondary muscle group, making it a well-rounded abdominal movement.

Do I need any equipment for the Twisting Crunch (Arms Straight)?

No equipment is required this is a bodyweight exercise you can perform anywhere with enough floor space. A yoga mat can add comfort and support for your back during the crunch motion.

Is the Twisting Crunch (Arms Straight) suitable for beginners?

Yes, beginners can perform this exercise, but should focus on slow, controlled movements to build core strength before increasing speed. Start with fewer reps and prioritize proper form over intensity.

What are common mistakes to avoid when doing Twisting Crunches?

Avoid jerking your neck forward or using momentum instead of core muscles to lift. Keep your arms straight and your lower back pressed into the mat to maintain correct posture and reduce injury risk.

How many sets and reps should I do for Twisting Crunches?

Aim for 2–3 sets of 12–15 reps per side for general fitness, adjusting based on your core strength level. For endurance and toning, maintain controlled pace and short rest periods between sets.

Are there safer modifications for people with lower back issues?

Yes, reduce the range of motion and keep your head supported with one hand to minimize strain. Performing the twist from a seated position or using a stability ball can decrease pressure on the spine.

What variations can make Twisting Crunches more challenging?

You can hold a light weight or medicine ball in front of you to increase resistance during the twist. Performing the move with legs elevated or on a stability ball engages more muscles and intensifies the workout.

Twisting Crunch (Arms Straight)

Target Muscles

Primary:

Obliques

Upper Abs

Secondary:

Lower Abs

Equipment Required

Bodyweight

Exercise Type

Reps Only

How To Do

Lie on your back with knees bent, feet flat, and arms extended straight in front of you. Crunch your upper body up, then twist your torso to one side, reaching your arms toward that side before returning to center and lowering back down. Keep your core engaged and avoid pulling on your neck throughout the movement.

Step-by-Step Instructions

Start by lying on your back with your knees bent and feet flat on the floor. Keep your arms extended straight in front of you.
Engage your core muscles and lift your upper body slightly off the ground into a crunch position.
While maintaining the crunch, twist your torso to one side, reaching your arms towards that side.
Return to the center and lower your upper body back to the starting position.
Repeat the movement, alternating sides with each repetition.

Explore more obliques exercises or bodyweight exercises in our exercise library.

Alternative Exercises

Bicycle Twisting Crunch

Obliques

Upper Abs

Bodyweight

Elbow-to-Knee Crunch

Obliques

Upper Abs

Bodyweight

Kettlebell Advanced Windmill

Obliques

Kettlebell

Barbell Standing Twist

Obliques

Barbell

Frequently Asked Questions

What muscles do Twisting Crunches with arms straight work?: This exercise primarily targets the obliques and upper abs, helping define your waistline and strengthen core rotation. It also engages the lower abs as a secondary muscle group, making it a well-rounded abdominal movement.
Do I need any equipment for the Twisting Crunch (Arms Straight)?: No equipment is required this is a bodyweight exercise you can perform anywhere with enough floor space. A yoga mat can add comfort and support for your back during the crunch motion.
Is the Twisting Crunch (Arms Straight) suitable for beginners?: Yes, beginners can perform this exercise, but should focus on slow, controlled movements to build core strength before increasing speed. Start with fewer reps and prioritize proper form over intensity.
What are common mistakes to avoid when doing Twisting Crunches?: Avoid jerking your neck forward or using momentum instead of core muscles to lift. Keep your arms straight and your lower back pressed into the mat to maintain correct posture and reduce injury risk.
How many sets and reps should I do for Twisting Crunches?: Aim for 2–3 sets of 12–15 reps per side for general fitness, adjusting based on your core strength level. For endurance and toning, maintain controlled pace and short rest periods between sets.
Are there safer modifications for people with lower back issues?: Yes, reduce the range of motion and keep your head supported with one hand to minimize strain. Performing the twist from a seated position or using a stability ball can decrease pressure on the spine.
What variations can make Twisting Crunches more challenging?: You can hold a light weight or medicine ball in front of you to increase resistance during the twist. Performing the move with legs elevated or on a stability ball engages more muscles and intensifies the workout.