All Exercises

Elbow to Knee Sit up

Target your obliques and build core strength with the Elbow to Knee Sit-up. This rotational sit-up variation effectively engages your waist muscles for a

Intermediate
Compound
Pull
1 min per set30s rest

Description

A sit up variation where you bring your elbow to the opposite knee to engage the obliques.

How to Do Elbow to Knee Sit up

  1. 1
    Setup

    Lie on your back with your knees bent, feet flat on the floor, and hands lightly placed behind your head, elbows wide.

  2. 2
    Setup

    Cross one ankle over the opposite knee (e.g., right ankle over left knee), allowing the top knee to fall open slightly.

  3. 3

    Exhale as you engage your core, lifting your head, shoulders, and upper back off the floor while rotating your torso.

  4. 4

    Aim to bring the elbow opposite to the elevated knee towards that knee (e.g., left elbow towards right knee), focusing on contracting your oblique muscles.

  5. 5

    Inhale as you slowly and with control lower your torso back to the starting position, maintaining tension in your core.

  6. 6

    Complete all repetitions on one side before switching to the other, or alternate sides for each repetition.

Tips

  • Focus on initiating the movement from your obliques and abdominal muscles, not by pulling on your neck with your hands.
  • Keep your lower back pressed into the floor as much as possible throughout the movement to protect your spine and maximize core engagement.
  • Control both the concentric (lifting) and eccentric (lowering) phases of the movement to fully engage the muscles and prevent momentum from taking over.
  • Keep your elbows wide throughout the exercise to prevent neck strain and ensure your shoulders are rotating properly.

Common Mistakes

  • ×Pulling on the neck instead of engaging the core: Lightly support your head with your hands, allowing your abdominal muscles to drive the lift and rotation.
  • ×Rushing the movement and losing control: Slow down the entire exercise, especially the lowering phase, to maximize time under tension and muscle activation.
  • ×Lifting the lower back excessively off the floor: Actively brace your core and press your lumbar spine towards the floor to maintain stability and prevent arching.

Variations

Related Exercises

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