Decline Crunch — start position
Start
Decline Crunch — end position
End

Core / Intermediate / Isolation (single joint)

Decline Crunch

A crunch on a decline bench with feet anchored that strengthens the abdominals through a greater range and load than a floor crunch.

At a glance

Primary
Abs
Secondary
Obliques, Hip flexors
Equipment
Bench
Movement pattern
Trunk flexion
Level
Intermediate
Type
Core, Isolation (single joint)

How to do it

  1. Lie back on a decline bench with your feet hooked under the pads and hands across your chest or beside your head.
  2. Curl your torso up by flexing your spine, bringing your chest toward your knees.
  3. Pause and squeeze your abs at the top.
  4. Lower slowly back to the start.

Tips

  • Do not pull on your neck.
  • Exhale as you curl up.

Common mistakes

  • ✗ Pulling on the head with the hands.

    Why it hurts: The neck flexes hard under the arm pull and gets strained.

    ✓ Instead: Touch the fingertips lightly behind the ears or cross the arms on the chest and look at the ceiling.

  • ✗ Doing hundreds of fast reps.

    Why it hurts: Repeated fast spinal flexion can irritate the discs, especially for people with a history of back pain.

    ✓ Instead: Do fewer, slower reps and mix in anti-movement core work such as planks and dead bugs.

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Muscles worked

Neck (Front)Upper traps (Front)Front delts (Front)Side delts (Front)Chest (Front)Serratus anterior (Front)Biceps (Front)Forearms & grip (Front)Abs — primary (Front)Obliques — secondary (Front)Hip flexors — secondary (Front)Quads (Front)Adductors (Front)Shins (tibialis) (Front)Calves (Front)Outer shins (peroneals) (Front)Feet (arch & toes) (Front)Neck (Back)Upper traps (Back)Upper back (rhomboids, mid/lower traps) (Back)Rear delts (Back)Side delts (Back)Rotator cuff (Back)Lats (Back)Lower back (erectors) (Back)Triceps (Back)Forearms & grip (Back)Hip abductors (glute med) (Back)Glutes (Back)Hamstrings (Back)Adductors (Back)Calves (Back)
FrontBack
  • Primary: Abs
  • Secondary: Obliques, Hip flexors

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Illustration: Everkinetic (everkinetic.com), CC BY-SA 4.0.