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  3. Exercises
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  5. Core & Abs
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  7. Standing Turn And Knee Raise

Exercise guide

Standing Turn And Knee Raise

  • Intermediate
  • Compound
  • Rep-based
  • Lower legs
  • Waist

This dynamic bodyweight exercise targets the obliques and rectus abdominis through a combination of hip flexion and spinal rotation, while also improving balance and hip mobility.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Standing Turn And Knee Raise demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Quadriceps

Secondary

  • Glutes
  • Hip flexors

Equipment

  • Body weight

Setup

  1. Stand tall with your feet hip-width apart and your core engaged.
  2. Place your fingertips lightly behind your ears with your elbows flared out to the sides.
  3. Distribute your weight evenly across both feet and look straight ahead.

How to do it

  1. Exhale as you drive your right knee up toward your chest while rotating your torso to bring your left elbow toward that knee.
  2. Focus on bringing the ribcage toward the opposite hip rather than just pulling the elbow forward.
  3. Inhale as you lower your leg with control and return your torso to the starting neutral position.
  4. Immediately repeat the movement on the opposite side, alternating in a fluid, rhythmic motion.

Form checklist

  • Keep your chest lifted and avoid rounding your shoulders forward.
  • Maintain a slight bend in the standing leg to help with balance.
  • Ensure the rotation comes from your midsection, not just your neck or arms.
  • Drive the knee as high as possible to fully engage the lower abdominals.

Pro tips

  • Pause for a split second at the peak of the contraction to maximize oblique engagement.
  • Maintain a 'proud chest' throughout the movement to ensure the core muscles are doing the work rather than the hip flexors taking over.
  • Visualize wringing out your torso like a wet towel during the rotational phase.

Make it harder

  • Increase the tempo to a 'Power Knee' style to add a cardiovascular challenge.
  • Hold a light medicine ball or weight plate at chest height to increase rotational resistance.

Frequently asked

What muscles does the standing turn and knee raise work?
The standing turn and knee raise primarily targets the quadriceps, and also works the glutes and hip flexors as secondary muscles.
What equipment do you need for the standing turn and knee raise?
The standing turn and knee raise requires no equipment — just your body weight.
Is the standing turn and knee raise good for beginners?
The standing turn and knee raise is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • 90 To 90Beginner · abs, glutes, obliques, and quadriceps
  • 90 To 90 SwitchIntermediate · abs, glutes, obliques, and quadriceps
  • Air Punches MarchBeginner · calves, pectorals, and quadriceps
  • All Fours Squat StretchBeginner · 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.

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