Technique
- Lie on supine on the ground with arms extended overhead and feet together
- Perform a crunch by lifting your arms, upper back and legs off the ground into a Hollow body position
- Return to the starting position and repeat.
Form tips
- Keep your spine still at all times.
- Do not crane your neck forward.
Muscles
Strength
Primary
- Abs
- Obliques
Secondary
- Pelvis
Individual muscles
Individual muscles
- Rectus abdominis
- External oblique
- Internal oblique
Equipment
Appears in
Progressions
Hollow body rock
Novice
Rolling compression
Intermediate
Body side roll
Intermediate
Supine arch to hollow body crunch
Novice
Regressions
Tuck-up
Beginner
Hollow body hold arms down
Beginner
Variations
Hollow body hold
Novice
View Similar Exercises
View Similar Exercises
Crunch
Beginner
Seated scissors
Beginner
Chair crunch
Beginner
Dead bug crunch
Beginner
Double crunch
Novice
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