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Russian Twist: Rotational Core Work Done Right

The Russian twist trains rotation through your core — but only if the movement comes from your torso and not just your arms swinging a weight side to side.

· 2 min read

Russian Twist demonstration

The Russian twist is meant to build rotational core strength, which is exactly what it stops doing the moment the arms start swinging independently of the torso instead of moving together with it.

How to do it

  1. 1Sit with your knees bent — leaning back slightly so your torso is at roughly 45° to the floor.
  2. 2Lift your feet off the floor — for the harder version, or keep them planted while you build up rotational strength.
  3. 3Clasp your hands together — in front of your chest, or hold a light weight if you're progressing the exercise.
  4. 4Rotate your torso side to side — moving your whole upper body, not just your arms, tapping the floor beside your hip each time.
  5. 5Keep your spine tall — resist the urge to round forward as fatigue sets in.

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Sets and reps

3 sets of 16–20 total twists (8–10 per side), feet on the floor for beginners, lifted for a harder version.

Common mistakes

  • Swinging the arms alone. Moving just your arms side to side while your torso stays still trains almost nothing. The rotation needs to come from your core.
  • Rounding the lower back. Letting your spine curve as fatigue sets in shifts strain to your lower back. Keep your chest up and your spine long.
  • Moving too fast. Fast, flailing twists feel like more work but train less control. Slow the rotation down and feel your obliques doing it.

Safety note

If your lower back rounds to keep the movement going, that's the cue to either slow down, lower your feet to the floor, or reduce the range of the twist.

This is a rotation exercise for your core, not an arm-swinging exercise for your shoulders. Move slowly enough to feel the difference.

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