Skip to content
Crucible Fit
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Pricing
Get Crucible
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing
  • FAQ
  • Training Guides
Get Crucible
Crucible Fit

A daily functional fitness test for iPhone, Apple Watch and Android. Stations, reps and the Crux, sized to your readiness and your kit.

Download on the App StoreGet it on Google Play

Crucible Fit

  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing

Explore

  • Training Guides
  • Exercise Library
  • FAQ
  • Press
  • Support

Legal

  • Terms and Conditions
  • Privacy Policy
  • Consumer Health Data Notice

CRUCIBLE FIT™ and Crux by Crucible Fit are trademarks of Crucible Fit, LLC.

© 2026 Crucible Fit, LLC. All rights reserved. Apple, the Apple logo, iPhone and Apple Watch are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.

  1. Home
  2. /
  3. Exercises
  4. /
  5. Core & Abs
  6. /
  7. Weighted Bag Standing Swing Twist

Exercise guide

Weighted Bag Standing Swing Twist

  • Intermediate
  • Compound
  • Rep-based
  • Waist

This dynamic rotational exercise builds explosive core power and shoulder stability by swinging a weight diagonally across the body. It effectively integrates the glutes and obliques to drive the movement while the deltoids stabilize the weight through a large range of motion.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Weighted Bag Standing Swing Twist demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Abs
  • Deltoids
  • Glutes
  • Obliques

Secondary

  • Erector spinae
  • Serratus anterior

Equipment

  • Medicine ball

Setup

  1. Stand with feet slightly wider than shoulder-width apart, holding the weight (plate or ball) firmly with both hands.
  2. Maintain a slight bend in the knees and engage your core to stabilize the spine.
  3. Hold the weight at hip level with arms extended but not locked.
  4. Ensure your weight is evenly distributed across both feet.

How to do it

  1. Swing the weight diagonally upward across your body toward the opposite shoulder, pivoting your trailing foot inward to allow the hips to rotate.
  2. Exhale forcefully as you rotate, using your glutes and obliques to generate the power for the swing.
  3. Inhale as you control the weight back down to the center or opposite hip in a smooth, controlled arc.
  4. Immediately transition into the next rep by alternating sides in a fluid, rhythmic 'X' pattern.

Form checklist

  • Pivot the back foot fully to protect the knee and allow hip rotation.
  • Keep your chest lifted and avoid rounding the lower back during the swing.
  • Maintain a slight bend in the elbows to keep the tension on the muscles rather than the joints.
  • Brace the core throughout the entire movement to prevent over-rotation of the spine.

Pro tips

  • Focus on the 'braking' phase; use your obliques to actively decelerate the weight at the top of the swing.
  • Drive the movement from the ground up by pushing off the floor with your feet to initiate the rotation.
  • Keep your gaze following the weight to help maintain natural spinal alignment during the twist.

Make it harder

  • Increase the tempo to an explosive power pace, focusing on maximum speed during the upward phase.
  • Incorporate a shallow squat at the center point of the swing to increase lower body recruitment and metabolic demand.

Frequently asked

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

Related exercises

  • Boxing CrossIntermediate · abs, calves, deltoids, glutes, obliques, and pectorals
  • Boxing Low Hook With Bag And GlovesIntermediate · abs, deltoids, glutes, obliques, pectorals, and quadriceps
  • Boxing Up Hook With Bag And GlovesAdvanced · abs, deltoids, glutes, obliques, and pectorals
  • Dumbbell Front Hand To Hand Single Leg BalanceIntermediate · abs, deltoids, glutes, obliques, and quadriceps

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.

Download on the App StoreGet it on Google Play

See how a Crucible works