The Russian Twist is one of the most accessible ways to train rotational core strength, and it needs nothing but the floor and your bodyweight. By sitting in a leaned-back V-position and rotating your trunk side to side, you load the obliques through their natural job: twisting the torso. It builds the kind of rotational stability that carries over to throwing, swinging, change-of-direction sports, and everyday turning. Because it's a beginner-friendly bodyweight move, it scales easily, hold a plate or dumbbell when you want more, or keep your feet down to make it gentler. Done with intent, it's far more than a vanity ab burner.
How to do the russian twist
- Sit on the floor with your knees bent and feet flat, then lean your torso back to roughly a 45-degree angle so you feel your abs engage to hold the position.
- Lift your chest tall and brace your core as if bracing for a light punch, keeping a long spine rather than a rounded back.
- Clasp your hands together or hold a weight at chest height, with elbows slightly bent and arms a few inches off your torso.
- Rotate your trunk to one side, leading with your shoulders and ribcage, until your hands reach toward the floor beside your hip.
- Pause briefly at the end range to feel the oblique on that side, then reverse and rotate to the opposite side under control.
- Tap the floor (or bring the weight near the floor) beside each hip as a target, keeping the movement coming from your waist.
- For added difficulty, lift your feet a few inches off the floor and balance on your sit bones while you twist.
Muscles worked
The primary muscle worked by the Russian Twist is the obliques, the internal and external oblique muscles that run along the sides of your waist and are responsible for rotating and laterally flexing the trunk. Every twist to the side is driven by these muscles contracting to turn your ribcage over your pelvis. The abs (rectus abdominis) work as a strong secondary muscle, holding your torso in the leaned-back position isometrically so you don't collapse backward, which is why your midsection stays under tension the entire set. The hip flexors and spinal stabilizers also assist, especially when you elevate your feet, helping you balance on your sit bones throughout the movement.
Benefits
- Directly strengthens the obliques and builds rotational core power that transfers to sports like golf, tennis, and boxing
- Requires zero equipment, making it easy to do at home, while traveling, or at the end of any workout
- Improves trunk rotation control and anti-rotation stability that supports better posture and a stronger midline
- Scales effortlessly from beginner to advanced by elevating the feet or adding a plate, dumbbell, or medicine ball
- Trains the core in a movement pattern (rotation) that many other ab exercises like crunches and planks neglect
Common mistakes
- Rounding the back: keep your chest lifted and spine long so the work stays in your obliques, not your lower back.
- Swinging only the arms: drive the rotation from your waist and ribcage, letting the hands follow rather than lead.
- Going too fast with no real twist: slow down and rotate fully to each side so the obliques actually shorten and contract.
- Holding your breath: exhale as you rotate to each side to keep your core braced and movement controlled.
- Sitting too upright: lean back to around 45 degrees so the abs stay loaded throughout, instead of resting between reps.
- Letting the hips rotate too: anchor your pelvis and lower body so the twist happens at the trunk, isolating the obliques.
Form tips
- Initiate each rep by turning your shoulders and ribcage, picturing your belly button staying forward while your chest rotates over it.
- Keep your arms close to your body and elbows soft, the hands are just a target, not the muscle doing the work.
- Maintain a slight, consistent lean-back the entire set so your abs never get a chance to switch off between reps.
- Move at a controlled tempo with a brief pause at each side rather than rushing, quality rotation beats speed.
- Press your feet (or hover them) and brace your glutes to anchor the lower body so only your trunk twists.
Sets & reps
A solid starting point is 3 sets of 20 reps per side with about 45 seconds of rest, as in the FORMA seed. For muscular endurance and conditioning, keep it bodyweight and aim for 15 to 25 controlled reps per side across 3 to 4 sets. For hypertrophy and building the obliques, add a plate, dumbbell, or medicine ball and work in the 12 to 15 reps per side range for 3 to 4 sets, prioritizing a full, deliberate twist. To build rotational strength, use a heavier weight for 8 to 12 slow reps per side. Count one rep as a twist to each side, and stop the set the moment your back starts to round.
Frequently asked questions
What muscles does the Russian Twist work?
The Russian Twist primarily works the obliques, the muscles along the sides of your waist that rotate the trunk. The abs (rectus abdominis) act as a strong secondary muscle by holding your torso in the leaned-back position. Hip flexors and spinal stabilizers also assist, especially when you lift your feet off the floor.
Are Russian Twists good for beginners?
Yes. The Russian Twist is a beginner-friendly bodyweight exercise. New lifters can keep their feet planted on the floor and rotate without any weight to learn the movement. As you get stronger, you can elevate your feet or add a plate or dumbbell to make it more challenging.
Should my feet be on the floor or lifted during Russian Twists?
Both are valid. Keeping your feet on the floor is easier and lets you focus on rotating from the waist, making it ideal for beginners. Lifting your feet a few inches adds a balance and stability challenge that increases the demand on your core and hip flexors. Start with feet down and progress from there.
How do I make Russian Twists harder?
The simplest progression is to hold a weight, a plate, dumbbell, kettlebell, or medicine ball, at chest height while you twist. You can also lift your feet off the floor to add a balance challenge, slow down the tempo with a pause at each side, or increase your reps per side. Combine these for a serious oblique workout.
Why does my lower back hurt during Russian Twists?
Lower back discomfort usually comes from rounding your spine or twisting with a collapsed torso. Fix it by lifting your chest, keeping a long spine, and bracing your core throughout. Move from the waist rather than yanking with the arms. If you have a history of back issues, keep the load light and your feet down, or check with a professional.
How many Russian Twists should I do?
A good target is 3 sets of around 20 reps per side with roughly 45 seconds of rest. For endurance, stay bodyweight and aim for 15 to 25 reps per side. For building the obliques, add weight and drop to 12 to 15 reps per side. Always stop the set if your back begins to round.