Liftsmith

Hollow rock

A isolation exercise for the abs, with help from the quads. Equipment: no equipment.

Orbit
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WorksAbsQuads

Drag to turn the figure. The highlighted muscles are the ones doing the work.

How to do it

  1. Setup: Hold a hollow position, arms overhead and legs long.
  2. Rock from shoulders to hips without breaking the shape
  3. Keep the lower back rounded into the floor

Muscles worked

Hollow rock: 3D figure mid-rep with the abs highlighted

Equipment

None. You can do it anywhere. See more exercises by equipment.

Alternatives

Exercises that train the same main muscles. See all hollow rock alternatives.

More abs exercises

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Liftsmith decides when to do it, how many sets and reps, and the weight, from your recovery and last session. Log each set in one tap; the rest timer starts on its own.

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