How to Do Alternate Oblique Crunch

Alternate Oblique Crunch is a core exercise using bodyweight, listed as intermediate in the A90 Training Club catalogue.

Primary muscle

Core

Equipment

Bodyweight

Difficulty

Intermediate

01 / Move with control

How to perform

How to do Alternate Oblique Crunch

  1. 01Lie flat on the back with knees bent, feet on the floor, and fingertips lightly touching the temples.
  2. 02Lift the right shoulder off the mat and rotate the torso to bring the right elbow toward the left knee.
  3. 03Exhale forcefully during the rotation to maximize abdominal recruitment.
  4. 04Lower the shoulder back to the floor and immediately repeat the movement on the opposite side.

Same guidance shown inside the A90 app

02 / Anatomy

Muscles worked by Alternate Oblique Crunch

Primary Stabiliser Inactive

Tap to explore manually

Primary movers

  • Core Stabilises the spine and transfers force.

Stabilisers

  • Lower back Stabilises the spine during lifts and bends.
  • Forearms Grips and stabilises the wrist under load.

03 / A90 Coach

A90 Coach tip

Drive the lower back into the floor to ensure the ribs rotate toward the opposite hip.

Same coaching engine used inside the A90 app

05 / FAQ

Alternate Oblique Crunch questions

What muscles does Alternate Oblique Crunch work?

Alternate Oblique Crunch is catalogued as a core exercise in A90 Training Club, with the core as its primary muscle group.

How do you do Alternate Oblique Crunch correctly?

Lie flat on the back with knees bent, feet on the floor, and fingertips lightly touching the temples. Lift the right shoulder off the mat and rotate the torso to bring the right elbow toward the left knee. Exhale forcefully during the rotation to maximize abdominal recruitment. Lower the shoulder back to the floor and immediately repeat the movement on the opposite side.

What is the A90 coach tip for Alternate Oblique Crunch?

Drive the lower back into the floor to ensure the ribs rotate toward the opposite hip.

Is Alternate Oblique Crunch suitable for beginners?

Alternate Oblique Crunch is rated intermediate in the A90 Training Club catalogue.

Do you need equipment for Alternate Oblique Crunch?

No. Alternate Oblique Crunch is listed as a bodyweight movement in the A90 catalogue, so you can train it with no kit.

A90 Intelligence

Put this into a real plan.

A90 Intelligence programmes alternate oblique crunch into a 30, 60 or 90 day plan built around your equipment, then adjusts it as you train.

Download on the App StoreGet it on Google Play

Free to download · 7 day free trial · Cancel anytime