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  3. Exercises
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  5. Core & Abs
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  7. Sitting Floor Alternating Toe Touch

Exercise guide

Sitting Floor Alternating Toe Touch

  • Intermediate
  • Compound
  • Rep-based
  • Waist

This intermediate core exercise challenges the entire abdominal wall and obliques through a combination of isometric stability and dynamic rotation. It effectively builds functional core strength and improves balance by requiring a constant V-sit hold throughout the movement.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Sitting Floor Alternating Toe Touch demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Abs
  • Obliques

Secondary

  • Erector spinae

Equipment

  • Body weight

Setup

  1. Sit on the floor with your knees bent and feet flat, then lean your torso back at a 45-degree angle to engage your core.
  2. Lift your feet off the floor and extend your arms out to the sides, balancing on your sit bones in a V-position.
  3. Keep your spine neutral and your chest lifted to maintain a strong, upright posture.

How to do it

  1. Exhale as you rotate your torso and reach your right hand toward your left toes while simultaneously extending your left leg straight out.
  2. Inhale as you return to the starting V-sit position, pulling your knee back in and centering your torso.
  3. Repeat the movement on the opposite side, reaching your left hand toward your right toes while extending your right leg.
  4. Maintain a slow, controlled tempo, ensuring your feet remain hovering off the floor for the entire set.

Form checklist

  • Keep your chest up and avoid rounding your lower back as you reach.
  • Ensure the rotation occurs at the waist and ribcage, not just the shoulder joint.
  • Keep your core braced and avoid letting your feet touch the ground between repetitions.
  • Maintain a neutral neck position by following the movement of your torso with your gaze.

Pro tips

  • Focus on the 'mind-muscle connection' by imagining you are wringing out your midsection like a towel at the peak of the rotation.
  • Pause for a split second when your hand reaches your toe to maximize the peak contraction of the obliques.

Make it harder

  • Perform the exercise while sitting on the edge of a flat bench to increase the range of motion and the stability requirement.
  • Hold a light medicine ball or dumbbell with both hands to add resistance to the rotational phase.

Frequently asked

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

Related exercises

  • 3/4 Sit-UpBeginner · abs and obliques
  • 45 Degree Bicycle Twisting CrunchIntermediate · abs and obliques
  • 45 Degree Lean Back Alternate Knee RaiseBeginner · abs and obliques
  • 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals

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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