Twisting Crunch
The Twisting Crunch is a bodyweight core exercise that adds rotation to a crunch to train control and strength through the midsection.
Twisting Crunch
Muscles Worked: Twisting Crunch
The twisting crunch mainly works your abs by curling your upper body off the floor, while your obliques drive the twist that brings one side of your ribs toward the opposite hip. Because you rotate as you crunch, the side abs have to work harder than in a basic floor crunch. Breathing out hard during the top part can increase abdominal muscle activity, which may help you better brace and feel your abs working during the movement (Chino et al., 2024).
Technique and form
How to perform the Twisting Crunch
- Lie on your back with knees bent and feet flat on the floor, placing your hands lightly behind your head with elbows flared out.
- Draw your navel toward your spine to engage your core, ensuring your lower back maintains contact with the floor throughout the movement.
- Exhale as you lift your shoulders and upper back off the floor, keeping your neck neutral by maintaining space between your chin and chest.
- As you curl upward, rotate your torso by bringing your right elbow toward your left knee while extending your right leg.
- Hold the contracted position for a brief moment, focusing on the oblique muscles working during the twist.
- Inhale as you slowly lower your upper body back down, controlling the descent without fully relaxing at the bottom.
- Repeat the movement on the opposite side, bringing your left elbow toward your right knee while extending your left leg.
- Continue alternating sides with a controlled tempo, avoiding momentum and keeping your movements deliberate and precise.
Important information
- Keep your elbows wide throughout the movement to prevent neck strain and maintain proper form.
- Focus on the rotation coming from your core rather than simply moving your elbows toward your knees.
- If you feel any neck discomfort, try placing your tongue on the roof of your mouth to help stabilize neck muscles.
- Make sure your breathing remains consistent and coordinated with each phase of the movement.
Is the Twisting Crunch good for muscle growth?
Yes — the Twisting Crunch can help build your abs and obliques, especially if you use clean reps, full control, and enough total volume. It is not the best choice for heavy overload, but it does train trunk flexion and rotation together, and forceful exhalation is associated with higher abdominal muscle activity during this kind of effort (Chino et al., 2024).
- Better oblique focus — Adding the twist shifts more work to the muscles on the sides of your waist than a straight-up crunch-floor. That makes it useful when your goal is to bring up visible side-ab detail, not just the middle of your stomach.
- Easy to make harder without equipment — You can pause at the top, slow the lowering phase, or add reps before you ever need a different exercise. Those changes increase how long the abs stay under tension, which matters when bodyweight is your only resistance.
- Breathing helps the rep — Forcefully breathing out as you twist and crunch is associated with higher abdominal muscle activity, not just a harder-feeling rep. Research on expiratory effort found higher abdominal muscle activity when subjects produced stronger mouth pressure during exhalation (Chino et al., 2024).
- Low fatigue, easy to place in a workout — This move does not drain you like big compound lifts, so it fits well after squats, presses, or as part of an ab circuit with reverse-crunch. That makes it easier to accumulate enough weekly ab work without wrecking recovery.
Programming for muscle growth
Do 2-4 sets of 12-20 reps per side with 30-60 seconds rest. Train it 2-4 times per week because abs usually recover quickly from bodyweight isolation work. Use slow, clean reps and a brief squeeze at the top so the abs and obliques stay loaded instead of letting momentum do the work.
Twisting Crunch Variations
Alternative Exercises
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FAQ - Twisting Crunch
Twisting Crunches primarily target the obliques (side abdominal muscles) while also engaging the rectus abdominis (six-pack muscles). The rotational component specifically activates the internal and external obliques more effectively than standard crunches.
Beginners can perform the movement with a smaller range of motion and no added resistance. For a greater challenge, advanced lifters can hold a weight plate or medicine ball against the chest, increase the rotation angle, or elevate the feet off the ground.
The most common mistakes include pulling on the neck, rushing through repetitions, and rotating from the neck rather than the torso. Focus on initiating the twist from your core, keeping your neck in a neutral position, and controlling the movement throughout the entire range of motion.
For optimal results, perform 2-3 sets of 12-15 controlled repetitions on each side, 2-3 times weekly. Quality always trumps quantity with this exercise—focus on proper form and complete muscle engagement rather than high rep counts.
Twisting Crunches may not be suitable for those with existing lower back conditions due to the rotational stress. If you have back issues, consult a healthcare provider first and consider starting with stabilization exercises like planks before progressing to rotational movements.
Scientific References
Association between expiratory mouth pressure and abdominal muscle activity in healthy young males.
Chino K, Ohya T, Suzuki Y · European journal of applied physiology (2024)
Sources are peer-reviewed academic publications from PubMed.
Twisting Crunch
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