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Exercise Library/Abs/Body weight/Oblique Crunch
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Oblique Crunch

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The Oblique Crunch is a bodyweight exercise that targets the oblique muscles on the sides of the abdomen, helping to strengthen and define the core for better rotational stability and posture. Perform it by lying on your back, bending your knees, and crunching your torso sideways to bring one elbow toward the opposite knee, alternating sides. It's ideal for beginners to advanced athletes seeking to enhance midsection strength without equipment.

How to Perform Oblique Crunch

  1. 1Lie on your back on a mat with knees bent and feet flat on the floor, hip-width apart.
  2. 2Place your left hand behind your head, fingers lightly touching the side of your head, and extend your right arm straight out to the side on the floor.
  3. 3Engage your core by drawing your belly button toward your spine.
  4. 4Exhale as you crunch upward, lifting your right shoulder blade off the floor while rotating your torso to bring your left elbow toward your right knee.
  5. 5Pause briefly at the top, squeezing your obliques.
  6. 6Inhale as you slowly lower your torso back to the starting position.
  7. 7Repeat for desired reps, then switch sides (right hand behind head, left arm extended).
  8. 8Key form tips: Keep your lower back pressed into the floor; avoid pulling on your neck with your hand. Common mistakes: Using momentum instead of controlled movement, or lifting your feet off the floor.

Muscles Worked

Front

Back

Primary
Secondary
Primary
Abs

Equipment Required

Body weight
Uses 40% of bodyweight

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Quick answers

What muscles does Oblique Crunch work?
Oblique Crunch primarily targets the Abs.
What equipment do I need for Oblique Crunch?
Oblique Crunch is a bodyweight exercise. No additional equipment is required, though you may add resistance for progression.
How do I perform Oblique Crunch correctly?
Oblique Crunch is performed in 8 steps. Start by: Lie on your back on a mat with knees bent and feet flat on the floor, hip-width apart. See the full step-by-step instructions above for complete form guidance.
What type of exercise is Oblique Crunch?
Oblique Crunch is a strength training exercise designed to build muscle and increase force production. It primarily works the Abs.

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