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. Lying Reverse Twist

Exercise guide

Lying Reverse Twist

  • Intermediate
  • Compound
  • Rep-based
  • Waist

The Lying Reverse Twist (Prone Scorpion) is a dynamic rotational exercise that builds posterior chain strength and core mobility by combining hip extension with torso rotation. It specifically targets the glutes and hamstrings during the leg lift while engaging the obliques to stabilize and rotate the lower body.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Lying Reverse Twist demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Glutes
  • Hamstrings
  • Obliques

Secondary

  • Abs
  • Erector spinae

Equipment

  • Body weight

Setup

  1. Lie face down (prone) on a flat surface with your legs straight and feet together.
  2. Extend your arms out to the sides in a 'T' shape, palms facing down for stability.
  3. Rest your chin or forehead on the floor to maintain a neutral cervical spine.
  4. Engage your core and press your hips lightly into the floor to stabilize your pelvis.

How to do it

  1. Exhale as you lift your right leg off the floor by squeezing your right glute and hamstring, keeping the leg mostly straight.
  2. Cross the right leg over your body, reaching your right foot toward your left hand while keeping your chest and shoulders pinned to the floor.
  3. Inhale as you slowly reverse the motion, returning your right leg to the starting position with control.
  4. Repeat the movement on the left side, alternating legs at a controlled, rhythmic tempo.

Form checklist

  • Keep both shoulders in contact with the ground throughout the entire rotation.
  • Initiate the lift from the glute and hamstring rather than arching the lower back.
  • Avoid using momentum to swing the leg; focus on a slow, deliberate reach.
  • Maintain a steady breathing pattern, exhaling on the effort of the twist.

Pro tips

  • Focus on reaching your toe as far away from your hip as possible to maximize the stretch in the hip flexors and engagement in the obliques.
  • Pause for one second at the peak of the rotation to emphasize the mind-muscle connection with the glute of the working leg.

Make it harder

  • Wear ankle weights to increase the resistance during the hip extension phase.
  • Perform the movement with a slight pause at the top and a 3-second eccentric (lowering) phase to increase time under tension.

Frequently asked

What muscles does the lying reverse twist work?
The lying reverse twist primarily targets the glutes, hamstrings, and obliques, and also works the abs and erector spinae as secondary muscles.
What equipment do you need for the lying reverse twist?
The lying reverse twist requires no equipment — just your body weight.
Is the lying reverse twist good for beginners?
The lying reverse twist is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • Back Leg Lift JackBeginner · abs, glutes, hamstrings, and obliques
  • Balance BoardIntermediate · abs, glutes, hamstrings, obliques, and quadriceps
  • Barbell Lunge TwistIntermediate · abs, glutes, hamstrings, obliques, and quadriceps
  • Baseball HitAdvanced · biceps, deltoids, glutes, hamstrings, lats, obliques, pectorals, quadriceps, and triceps

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