Core · Rotation

Russian Twist

The Russian twist is a rotational core exercise performed seated with your torso leaned back, rotating your shoulders side to side while holding a weight. It trains the obliques through spinal rotation. The rotation must come from the torso, not the arms — usually 3 sets of 10–20 rotations per side.

Also known as: Seated twist, Russian twists, Weighted twist

Muscle group: Core
Movement pattern: Rotation
Type: Isolation
Equipment: Bodyweight, Dumbbell, Medicine ball
Difficulty: Beginner

What muscles does the russian twist work?

Primary movers

Obliques

Assisting muscles

Rectus abdominis
Hip flexors
Spinal erectors

The internal and external obliques are responsible for rotating and side-bending the trunk. The Russian twist is one of the few common exercises that trains rotation directly, which is why it complements planks and crunches rather than duplicating them.

The rectus abdominis and hip flexors work isometrically throughout to hold your leaned-back position. That static hold is a significant part of the exercise — many people find their hip flexors fatigue before their obliques do.

The lean-back angle sets the difficulty. The further back you lean, the greater the demand on the whole trunk to hold position. Sitting too upright makes the exercise almost trivial.

Crucially, the load has to be moved by rotating the torso. Swinging a weight side to side with the arms while the shoulders stay square looks like a Russian twist but trains nothing — the arms are simply moving a mass through space.

How to do the russian twist

Setup

1
Sit on the floor with your knees bent and heels either lightly touching the floor or lifted.
2
Hold a dumbbell, plate or medicine ball at your chest with both hands.
3
Lean your torso back to roughly 45 degrees.
4
Set a neutral spine — chest up, no rounding through the lower back.
5
Brace your abs before the first rotation.

Execution

1
Rotate your torso to one side, turning your shoulders rather than just moving your arms.
2
Bring the weight beside your hip, keeping it close to your body.
3
Pause briefly at the end of the rotation and feel the oblique contract.
4
Rotate back through the centre and continue to the opposite side under control.
5
Keep your hips and knees facing forward — the rotation happens above the waist.
6
Maintain your lean-back angle throughout; do not sit up as you fatigue.

Common russian twist mistakes

Moving only the arms

The weight travels side to side while the shoulders and ribcage stay square to the front. Without rotation there is no oblique work — this is the single most common way the exercise is wasted.

The fix: Watch your shoulders, not the weight. Your sternum should point in a different direction at each end of the rep. Slow down and reduce the load until you can feel the rotation.

Rounding the lower back

The spine collapses into flexion as you lean back, putting the lumbar spine into a rotated and flexed position under load — a poor combination.

The fix: Keep your chest lifted and your spine neutral. If you cannot hold that position at 45 degrees, sit more upright until you can.

Rushing the reps

Fast side-to-side swinging driven by momentum. The obliques barely contract and the movement becomes a rhythm exercise.

The fix: Pause for a beat at the end of each rotation. Half the speed and half the weight will produce twice the result.

Letting the feet drop as you fatigue

If you started with the heels raised, dropping them mid-set quietly reduces the difficulty and disguises the fact that the set should have ended.

The fix: Pick one foot position and keep it. If your feet drop, end the set — or start with the heels down deliberately.

How many sets and reps?

Goal	Sets	Reps	Load	Rest
Hypertrophy	3	10–20 per side	Light–moderate, controlled	60 s
Bodyweight	3	15–25 per side	Bodyweight	45–60 s
Beginner	2–3	8–12 per side	Bodyweight, heels down	45 s

Russian twists are best trained light and slow — the obliques are not large muscles and the position is not one you want to load heavily with a rounded spine. Two or three sessions a week alongside anti-extension work like planks gives balanced core training. If your lower back objects to the loaded rotation, cable woodchops train the same pattern in a more upright, spine-friendly position.

Russian Twist variations and alternatives

Bodyweight Russian Twist

Easier

Hands clasped together with no external load, and heels on the floor. The right starting point for learning to rotate from the torso.

Feet-Elevated Russian Twist

Harder

Lifting the heels off the floor removes a point of support and increases the demand on the whole trunk considerably.

Medicine Ball Russian Twist

Harder

A heavier implement held further from the body lengthens the lever and increases the rotational demand.

Cable Woodchop

Alternative

Trains rotation standing up against constant cable tension, with far less lumbar flexion. Generally the more back-friendly rotational option.

Side Plank

Alternative

Trains the obliques isometrically to resist side bending rather than to produce rotation. Complementary to twisting work.

Frequently asked questions

Are Russian twists effective?

They are effective at training the obliques through rotation, provided you actually rotate your torso rather than swinging your arms. That distinction matters enormously — a large proportion of Russian twists performed in gyms train almost nothing because the shoulders never turn. Done properly, slowly, with a modest load, they work well.

Are Russian twists bad for your back?

They can be if performed with a rounded lower back and a heavy weight, because loaded rotation combined with lumbar flexion is a demanding position for the spine. Keep your chest up and your spine neutral, use a light load, and move slowly. If you have a history of back problems, cable woodchops are a safer way to train rotation.

How heavy should Russian twists be?

Light. The obliques are small muscles and the position does not lend itself to heavy loading. Most people are better served by a 5–10 kg plate or dumbbell moved slowly with a pause at each end than by a heavier weight swung quickly. If the weight is pulling you out of position, it is too heavy.

Should my feet be on the floor during Russian twists?

Either works. Heels down is the easier version and lets you focus on rotating properly. Heels lifted removes a support point and increases the demand on the whole trunk. Start with your feet down, and lift them once you can rotate cleanly without your lower back rounding.

Do Russian twists get rid of love handles?

No. Spot reduction is not possible — training the obliques does not preferentially burn the fat over them. Russian twists strengthen and build the obliques. Reducing fat over the waist is a function of overall energy balance, not of any particular exercise.

Hercules tracks every russian twist you log, shows you last session's numbers before you lift, and flags when your progress stalls.

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