Decline Oblique Crunch
Muscles worked
Instructions
- 1Secure your legs at the end of the decline bench and slowly lay down on the bench.
- 2Raise your upper body off the bench until your torso is about 35-45 degrees if measured from the floor.
- 3Put one hand beside your head and the other on your thigh. This will be your starting position.
- 4Raise your upper body slowly from the starting position while turning your torso to the left. Continue crunching up as you exhale until your right elbow touches your left knee. Hold this contracted position for a second. Tip: Focus on keeping your abs tight and keeping the movement slow and controlled.
- 5Lower your body back down slowly to the starting position as you inhale.
- 6After completing one set on the right for the recommended amount of repetitions, switch to your left side. Tip: Focus on really twisting your torso and feeling the contraction when you are in the up position.
table_chartRecommended sets and reps
These ranges vary depending on your training goal — adjust the load accordingly.
| Goal | Sets | Reps | Rest |
|---|---|---|---|
| boltStrength | 3–4 | 6–8 | 2–3 min |
| fitness_centerHypertrophy | 3–4 | 10–15 | 60 s |
| timerEndurance | 2–3 | 15–20 | 30–45 s |
About Decline Oblique Crunch
The decline oblique crunch is an isolation variation that specifically targets the obliques by combining trunk flexion with rotation. Set up on a decline bench with your legs locked, you raise your torso to roughly 40 degrees, then twist to bring one elbow toward the opposite knee, emphasizing the contraction rather than sheer range of motion. The bench's downward angle increases leverage and the stretch at the bottom compared to a floor crunch, making the movement more demanding using only bodyweight. It is a great finishing move for the midsection, best placed at the end of an ab session after more global movements, with a focus on contraction quality over speed.
check_circleBenefits
- check_circleEffectively isolates the obliques through controlled rotation
- check_circleThe decline angle increases range of motion and tension on the abs
- check_circleRequires no added load, just bodyweight
- check_circlePairs well with frontal core work for complete midsection training
lightbulbExecution tips
- lightbulbKeep the motion slow and controlled, no jerking
- lightbulbExhale at peak contraction
- lightbulbAim the elbow toward the knee, not just a torso twist
- lightbulbDon't pull on your neck with the hand placed near your head
warningCommon mistakes
- warningUsing momentum instead of actively contracting the obliques
- warningYanking the head with your hand to gain range of motion
- warningDropping down too fast without eccentric control
- warningRushing the reps and sacrificing contraction quality
helpFrequently asked questions
Should I alternate sides within the same set?expand_more
No, complete all reps on one side before switching, as with any unilateral exercise.
Can this replace regular crunches?expand_more
It complements them rather than replacing them: it mainly targets the obliques, while a regular crunch works the rectus abdominis more.
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