Oblique Knee-Tuck Crunch
Target your obliques with this core-chiseling crunch variation! Twist and tone your way to a stronger midsection.
The Oblique Knee-Tuck Crunch mainly works the core. No equipment needed: it uses just your bodyweight.
Optional Equipment

Oblique Knee-Tuck Crunch Muscles Worked
Primary
Obliques; Abdominals (rectus abdominis)
Secondary
Hip Flexor (iliopsoas)
Oblique Knee-Tuck Crunch Variations and Alternatives
How to do the Oblique Knee-Tuck Crunch
Start by lying on your back on a comfortable surface, such as an exercise mat. Place your hands lightly behind your head without interlocking your fingers. Bend your knees and keep your feet flat on the floor.
Engage your core and lift your shoulder blades slightly off the ground, keeping your gaze towards the ceiling to avoid straining your neck.
As you perform a crunch, simultaneously bring one knee towards your chest and twist your torso so that the opposite elbow moves toward the raised knee, aiming to touch it if possible. This motion targets the obliques on one side of your abdomen.
Pause briefly at the top of the movement, ensuring you are squeezing your obliques.
Slowly lower back down to the starting position with control.
Repeat the movement, this time bringing the opposite knee toward your chest and twisting so that your other elbow meets the raised knee.
Continue to alternate sides for the desired number of repetitions.
Aim to perform 2 to 3 sets of 10-15 repetitions per side or as many as is suitable for your fitness level.
Remember to breathe smoothly throughout the exercise; exhale as you crunch and twist, and inhale as you return to the starting position. Also, keep your movements controlled to maximize the engagement of your obliques and abdominal muscles.
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Oblique Knee-Tuck Crunch FAQs
What muscles does the Oblique Knee-Tuck Crunch work?
The Oblique Knee-Tuck Crunch mainly works the core. The main muscles are the obliques and rectus abdominis.
What equipment do you need for the Oblique Knee-Tuck Crunch?
None. The Oblique Knee-Tuck Crunch is a bodyweight exercise, so you can do it anywhere.
What are some Oblique Knee-Tuck Crunch variations and alternatives?
Similar exercises include the 45-Degree Twisting Bicycle-Crunch, 90-Degree Single Knee Crunch, Ab Roller Crunch and Vertical Knee Raise.
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