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  3. Exercises
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  5. Shoulders
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  7. Dumbbell Spin

Exercise guide

Dumbbell Spin

  • Intermediate
  • Compound
  • Rep-based
  • Shoulders
  • Waist

The Dumbbell Spin is a dynamic rotational exercise that builds core stability and shoulder mobility by moving a weight in a circular path around the head. It effectively targets the obliques and deltoids while challenging the deep stabilizers of the spine through a full range of motion.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Dumbbell Spin demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Abs
  • Deltoids
  • Obliques

Secondary

  • Erector spinae
  • Serratus anterior

Equipment

  • Dumbbell

Setup

  1. Stand with your feet shoulder-width apart and a slight bend in your knees for stability.
  2. Hold a single dumbbell horizontally by its ends (the bells) at chest height.
  3. Engage your core and pull your shoulder blades down and back to set a strong posture.

How to do it

  1. Inhale and begin moving the dumbbell in a circular motion around your head, keeping the weight as close to your neckline as possible.
  2. Exhale as you complete the circle and return the dumbbell to the starting position at the center of your chest.
  3. Alternate the direction of the spin for each repetition to ensure balanced muscle engagement.
  4. Maintain a controlled, steady tempo, taking approximately 2 seconds to complete one full rotation.

Form checklist

  • Keep your head and neck stationary; move the weight around your head, not your head around the weight.
  • Maintain a braced core to prevent the lower back from arching or the ribcage from flaring.
  • Keep your elbows tucked in relatively close to the body during the back portion of the rotation.
  • Ensure your hips remain square and facing forward throughout the entire movement.

Pro tips

  • Focus on 'carving' the circle as tight to your head as possible to maximize shoulder recruitment and core tension.
  • Squeeze your glutes throughout the set to create a stable base and protect your lumbar spine from shearing forces.

Make it harder

  • Perform the exercise from a half-kneeling position to reduce your base of support and further challenge core stability.
  • Incorporate a squat or lunge between each rotation to increase the metabolic demand and total-body engagement.

Frequently asked

What muscles does the dumbbell spin work?
The dumbbell spin primarily targets the abs, deltoids, and obliques, and also works the erector spinae and serratus anterior as secondary muscles.
What equipment do you need for the dumbbell spin?
The dumbbell spin uses dumbbell.
Is the dumbbell spin good for beginners?
The dumbbell spin is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals
  • Alternate Knee Raise Side ReachBeginner · abs, deltoids, and obliques
  • Alternate Leg Lift Tap Arms CircleIntermediate · abs, deltoids, obliques, and pectorals
  • Alternate Single Leg Raise PlankIntermediate · abs, deltoids, hamstrings, and obliques

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

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