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

Core / Beginner / Compound (multi-joint)

Decline Reverse Crunch

A bench exercise for the abs, with the hip flexors assisting.

At a glance

Primary
Abs
Secondary
Hip flexors
Equipment
Bench
Movement pattern
Hip flexion, Trunk flexion
Level
Beginner
Type
Core, Compound (multi-joint)

How to do it

  1. Lie on your back on a decline bench and hold on to the top of the bench with both hands. Don't let your body slip down from this position.
  2. Hold your legs parallel to the floor using your abs to hold them there while keeping your knees and feet together. Tip: Your legs should be fully extended with a slight bend on the knee. This will be your starting position.
  3. While exhaling, move your legs towards the torso as you roll your pelvis backwards and you raise your hips off the bench. At the end of this movement your knees will be touching your chest.
  4. Hold the contraction for a second and move your legs back to the starting position while inhaling.
  5. Repeat for the recommended amount of repetitions.

Common mistakes

  • ✗ Swinging the legs over with momentum.

    Why it hurts: The lower back is flung into flexion and the abs do little.

    ✓ Instead: Curl the pelvis up slowly and lower it under control.

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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 (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: Hip flexors

Best for

How specific this exercise is to each movement.

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Photos and instructions: free-exercise-db (github.com/yuhonas/free-exercise-db), public domain.