How to Do Decline Oblique Crunch
Start and end of one clean rep of Decline Oblique Crunch.
Quick facts
| Primary muscle | Core |
|---|---|
| Secondary muscles | — |
| Equipment | Bodyweight |
| Category | Strength |
How to perform Decline Oblique Crunch
- Secure your legs at the end of the decline bench and slowly lay down on the bench.
- Raise your upper body off the bench until your torso is about 35-45 degrees if measured from the floor.
- Put one hand beside your head and the other on your thigh. This will be your starting position.
- Raise 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.
- Lower your body back down slowly to the starting position as you inhale.
- After 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.
Muscles worked
- Core (primary): braces the trunk and resists twisting to protect the spine.
Sets & reps by goal
| Goal | Sets × reps | Load | Rest |
|---|---|---|---|
| Strength | 3–5 × 3–5 | Heavy (~85%+) | 2–3 min |
| Hypertrophy | 3–4 × 8–12 | Moderate (~65–75%) | 60–90 s |
| Endurance | 2–3 × 15–20 | Lighter (~50–60%) | 30–45 s |
Bodyweight movement: once you own the top of a rep range, progress by slowing the tempo, pausing at the hardest point, or moving to a harder variation instead of adding load.
Form tips
- Brace as if about to take a light punch and breathe shallowly — don't hold your breath for the whole set.
- Own the largest range you can control with clean form before you chase extra reps.
- Treat every rep the same — a repeatable setup and bar path is what lets you add weight safely over time.
- Stop a rep or two short of failure on most sets to keep form clean and recover faster.
Common mistakes
- Cranking with the hip flexors or neck instead of moving from the trunk.
- Cutting the range short to squeeze out extra reps instead of owning each full one.
- Chasing weight jumps before the current load feels solid on every rep.
Frequently asked questions
What muscles does Decline Oblique Crunch work?
Decline Oblique Crunch is a focused movement that primarily works the core.
What equipment do I need for Decline Oblique Crunch?
None — Decline Oblique Crunch is a bodyweight movement, so you only need your bodyweight and a little space.
How many sets and reps should I do for Decline Oblique Crunch?
It depends on your goal: about 3–5 sets of 3–5 heavy reps for strength, 3–4 sets of 8–12 for muscle growth, or 2–3 sets of 15–20 for endurance. Bodyweight movement: once you own the top of a rep range, progress by slowing the tempo, pausing at the hardest point, or moving to a harder variation instead of adding load.
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