Hollow-body knee tuck

The hollow-body knee tuck is a bodyweight abdominal exercise performed on the floor. It is similar to both the hollow-body hold and the knee tuck or reverse crunch, combining elements of both. It primarily targets the muscles of the rectus abdominis, or “six-pack” muscles. It can be performed for reps or time, either as part of an ab-focused workout or as a component of a circuit workout.


  1. Combines isometric and dynamic abdominal training
  2. Targets the six-pack muscles, but also the obliques and hip flexors
  3. Great for variety if you've been doing standard hollow-body holds or knee tucks
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Hollow-body knee tuck Images


Hollow-body knee tuck Instructions

Hollow-body knee tuck muscle diagram