The hollow body hold is an isometric core exercise borrowed from gymnastics in which you lie on your back and lift your arms and legs while pressing your lower back into the floor. By holding this "dish" shape, you train the entire anterior core to maintain tension and a posterior pelvic tilt under load. It is one of the best foundational drills for the bracing skill used in planks, leg raises, and advanced gymnastic movements.
Muscles Targeted
- Primary: Rectus abdominis, transverse abdominis
- Secondary: Obliques, hip flexors
- Tertiary: Quadriceps, shoulder stabilizers, serratus anterior
Starting Position
Lie flat on your back on a mat with your legs straight and arms extended overhead. Press your lower back firmly into the floor by tilting your pelvis posteriorly and bracing your abs. This flat-back contact is the foundation of the position - establish it before lifting anything off the ground.
Execution Steps
- Brace your core and press your lower back into the floor with a posterior pelvic tilt
- Lift your legs a few inches off the ground while keeping them straight and together
- Raise your arms and shoulder blades off the floor, reaching past your hips or overhead
- Form a shallow "dish" shape with only your lower back and glutes in contact with the floor
- Hold the position while breathing steadily and keeping the lower back pressed down
- Lower with control once your lower back starts to lift, then rest before the next hold
Form Cues
- Keep the lower back flat: The lumbar spine must stay pressed into the floor the entire time
- Squeeze the legs together and point the toes to maintain full-body tension
- Keep the ribs down rather than letting them flare toward the ceiling
- Reach long through the arms and legs to lengthen the lever
- Breathe shallowly and continuously instead of holding your breath
Common Mistakes
- Arching the lower back: The biggest error - if the lumbar spine lifts, the core is no longer working correctly.
- Raising the legs too high: Lifting legs high makes the hold easier and reduces core demand.
- Flaring the ribs: Letting the ribcage rise breaks the braced position.
- Holding the breath: Bracing without breathing limits hold time and safety.
- Bending the knees unintentionally: Soft knees reduce the challenge unless used as a deliberate regression.
Variations
- Tuck hollow hold: Knees and arms tucked to shorten the lever for beginners
- Single-leg hollow hold: One leg extended, one tucked as an intermediate step
- Hollow body rock: Rocking back and forth while maintaining the dish shape
- Weighted hollow hold: Holding a light plate or dumbbell overhead for added load
- Hanging hollow hold: Performed from a bar for an advanced variation
Tips for Progression
- Lengthen the lever: Progress from tuck to single-leg to full extension as you get stronger
- Increase hold time: Add 5-10 seconds per set as your endurance improves
- Lower the limbs: Bring arms and legs closer to the floor to increase difficulty
- Add load: Hold a light weight overhead once the bodyweight hold is easy
Training Notes
Include hollow body holds in your core training two to three times per week, often as a warm-up drill or a finisher. Beginners should start with the tuck variation for 15-20 seconds and progress toward 30-60 second holds in the full position. Because the hollow body teaches anti-extension bracing, it builds the foundation for planks, leg raises, and overhead lifting. Always regress the lever rather than allowing the lower back to arch - maintaining a flat lumbar spine is the entire point of the exercise.