Russian Twist: How to Do It, Muscles Worked and Mistakes to Avoid

The Russian twist is a rotational core exercise where you sit balanced on your tailbone, lean back slightly and twist your torso from side to side, usually holding a weight. It targets the obliques, the muscles down the sides of your waist that turn and brace your trunk, and it needs almost no kit, which is why it turns up in home workouts, ab circuits and boxing conditioning everywhere. Done well it is a genuinely useful builder of rotational strength. Done badly, fast and jerky with a swinging weight, it is mostly wasted effort and a little hard on your back. Here is how to do it properly, the muscles it works, and how to get real value from it.

How to do a Russian twist

You need nothing to start beyond a bit of floor space. Add a dumbbell, kettlebell, medicine ball or weight plate once your form is solid.

1. Set up. Sit on the floor with your knees bent and feet flat. Lean your torso back to around 45 degrees so you feel your abs switch on, and keep your back straight rather than rounded.
2. Find your balance. Lift your chest, pull your shoulders down and hold a weight (or clasp your hands) in front of your chest. For an easier version keep your heels lightly on the floor; for a harder version hover your feet.
3. Brace. Take a breath into your belly and tighten your abs as if bracing for a light punch. This brace stays on for the whole set.
4. Rotate. Turn your torso to one side under control, leading with your ribcage and shoulders, not just your arms. Take the weight towards the floor beside your hip. Keep your hips and legs relatively still so the movement comes from your trunk.
5. Return and repeat. Rotate smoothly back through the centre and over to the other side. That is one rep per side. Move slowly, pause briefly at each side, and keep breathing.

Muscles worked

The Russian twist is an oblique exercise with a strong bracing demand from the rest of your core, because you have to resist folding and rotating at the same time as you create rotation.

• Obliques. Your internal and external obliques are the main movers, contracting to rotate your trunk and to control the twist back through the middle. Free-weight and rotational core work loads the obliques well, and their activation varies a lot with how an exercise is set up (systematic review of core muscle activity during fitness exercises).
• Rectus abdominis. The six pack muscle down the front of your abdomen holds your torso in its leaned-back position and stops you collapsing backwards. It works isometrically throughout.
• Transverse abdominis. This deep corset-like muscle braces to stabilise your spine as you rotate, which is what keeps the movement safe.
• Hip flexors. Your hip flexors hold your legs and bent knees in place, and they work harder the higher you lift your feet off the floor.
• Lower back and shoulders. Your spinal erectors help keep your back straight, and your shoulders and upper back hold the weight steady in front of you.

If you want to load the movement over time, a light dumbbell, kettlebell or medicine ball gives you an easy way to add resistance a little at a time.

Benefits

• It builds rotational core strength. Twisting power transfers to sport and daily life, from throwing and swinging to simply turning to lift something. The Russian twist trains exactly that pattern.
• It sculpts the obliques. Strengthening the muscles at the sides of your waist gives your midsection more shape and definition, which shows once your body fat is low enough.
• It needs almost no kit or space. You can do it with nothing at all, and a single weight is enough to progress for a long time, which makes it ideal for home training.
• It supports whole-body training. A strong, stable trunk helps you brace on bigger lifts and stay injury-resistant. The NHS recommends muscle-strengthening work for all major muscle groups, including the core, on at least two days a week.

Common mistakes

Swinging the arms instead of rotating. By far the most common fault. The weight sways side to side while the torso stays put, so the obliques barely fire. Fix it by slowing right down and turning your ribcage, keeping the weight close to your chest.

Rushing the reps. Fast, bouncy twists use momentum, not muscle. Take a second to each side, pause, and control the return. Fewer honest reps beat a blur of sloppy ones.

Rounding the lower back. Collapsing into a C-shape puts your lower back in a weak, loaded and rounded position. Lift your chest, keep your spine long and only lean back as far as you can hold a flat back.

Going too heavy too soon. A heavy weight you have to heave across your body ruins your form and stresses your spine. Master bodyweight and light loads first, then add weight in small steps.

Holding your breath and losing the brace. If you let your abs go slack mid-set your torso wobbles and your back takes the strain. Keep a firm brace and steady breathing from the first rep to the last.

Make it easier or harder

Scale the Russian twist to your level rather than grinding out reps you cannot control.

• Easier: heels down. Keep both heels lightly on the floor and use no weight. This reduces the load on your hip flexors and core and lets you focus purely on rotating cleanly.
• Easier: less lean. Sit a little more upright. The further back you lean, the harder your abs have to work, so reduce the lean until you can keep a flat back.
• Harder: feet elevated. Hover your feet off the floor so your hip flexors and core carry the legs as well as the rotation.
• Harder: add weight. Hold a dumbbell, kettlebell, medicine ball or plate close to your chest, and increase it gradually as you get stronger.
• Harder: tap the floor. Touch the weight to the floor beside each hip at the end of every rotation for a fuller range of motion, keeping the movement slow.

If your lower back does not enjoy loaded twisting, swap in anti-rotation work such as a Pallof press hold or a plain plank to build core stability with less spinal rotation.

Sets and reps

A simple plan that works for most people:

• General core strength: 3 sets of 20 to 30 total twists (10 to 15 per side), 2 to 3 times a week, with a light to moderate weight. Rest 45 to 60 seconds.
• Endurance or circuits: 2 to 3 sets of 30 to 40 total twists at a lighter load, resting 30 seconds, folded into an ab or conditioning circuit.
• Learning the move: 3 sets of 20 slow bodyweight twists, heels down, focusing only on rotating the ribcage with a flat back.

Progress by adding a small amount of weight or by hovering your feet, not by simply piling on faster reps. When a set feels easy with clean rotation, make one thing harder and keep quality high.

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