All Exercises

Knee Tuck Oblique Crunch

Strengthen your obliques and core with the Knee Tuck Oblique Crunch. This bodyweight exercise targets your side abdominal muscles for a stronger, more

Intermediate
Compound
Pull
1 min per set30s rest

Description

A core strengthening exercise where the person lies down on the floor, and then lifts their torso and knee simultaneously, rotating the torso to bring the opposite elbow toward the lifted knee.

How to Do Knee Tuck Oblique Crunch

  1. 1
    Setup

    Lie supine on the floor with your hands lightly behind your head, elbows wide, and legs extended straight out.

  2. 2
    Setup

    Lift your head, shoulders, and feet slightly off the floor, engaging your core to maintain this elevated position.

  3. 3

    Exhale as you simultaneously crunch your torso, rotating to bring your right elbow towards your left knee, while drawing your left knee towards your chest.

  4. 4

    Inhale as you slowly extend your left leg and return your torso to the starting elevated position, keeping your head and shoulders slightly off the floor.

  5. 5

    Immediately repeat the movement on the opposite side, bringing your left elbow towards your right knee while drawing your right knee towards your chest.

  6. 6

    Alternate sides smoothly and continuously, maintaining core tension throughout the entire set.

Tips

  • Focus on initiating the movement from your obliques and core, rather than pulling on your neck or using momentum from your arms.
  • Maintain a controlled pace throughout the exercise, emphasizing both the crunching and extending phases for maximum muscle engagement.
  • Keep your elbows wide to prevent neck strain and ensure your shoulders remain elevated off the floor during the entire set.
  • Use your breath to deepen the contraction; exhale forcefully as you crunch and inhale slowly as you return to the starting position.

Common Mistakes

  • ×Pulling on the neck instead of engaging the core can cause strain; instead, keep hands lightly behind the head and focus on lifting with your abdominal muscles.
  • ×Rushing the movement and losing control reduces muscle activation; slow down the eccentric (lowering) phase to maximize time under tension.
  • ×Allowing the non-working leg or shoulders to fully rest on the floor diminishes continuous core engagement; maintain a slight elevation throughout the set to keep tension.

Variations

Related Exercises

Track Knee Tuck Oblique Crunch in your workouts

Log sets, reps, and weight. See your progress over time.

Get Ellim — Free