Hollow Body Hold
The position everything else is built on — if this fails, so does your plank.
Setup
- Lie flat, press the lower back into the floor and keep it there.
- Arms overhead, legs straight.
How To Do It
- Lift the shoulders and heels just off the floor while the lower back stays pressed down.
- Hold that shape, breathing normally.
- The moment the lower back lifts, the set is over — bring the arms or legs in.
Breathing
Breathe shallowly and continuously. Holding your breath hides a failing brace.
Common Mistakes
- Letting the lower back arch and holding on anyway.
- Starting with arms and legs fully extended before you have earned it.
Programming It
| Goal | Sets | Reps | Rest |
|---|---|---|---|
| Strength | 3–5 | 4–6 | 2–3+ min |
| Muscle | 3–4 | 8–12 | 60–90 sec |
| Endurance / Conditioning | 2–3 | 15–20 | 30–45 sec |
Why This Exercise Works
This movement trains the abs, deep core through a controlled range under load. Progressive tension over time is what produces adaptation — not novelty.
Where It Fits in a Program
The position everything else is built on — if this fails, so does your plank. Train it when you are fresh enough to execute it well — compound work early in a session, isolation and accessory work after. This is an appropriate entry point. Learn the movement with a load you can control for every rep before adding weight — technique acquired early is technique you keep.
Progressing and Regressing It
To progress the hollow body hold: add load in the smallest increment available, or slow the eccentric to three seconds. To regress it: reduce range to what you can control cleanly, or use a supported version of the same pattern. Change one variable at a time or you learn nothing about which change worked.
Equipment and Substitutions
This version needs no equipment. If the pattern is not available to you on a given day, choose another exercise training the same muscles from the list below — the pattern matters more than the implement.
Related Exercises
- V-Up — Abs, Hip Flexors
- Body Saw — Abs, Core, Shoulders
- Reverse Crunch — Abs, Hip Flexors
- Bicycle Crunch — Abs, Obliques
- Dead Bug — Deep Core
- Toes-to-Bar — Abs, Lats, Grip
- Hanging Leg Raise — Abs, Hip Flexors
- Hanging Knee Raise — Abs, Hip Flexors, Grip
Common Questions
What muscles does the hollow body hold work?
The hollow body hold primarily trains the abs, deep core. The listed muscles are highlighted in the animation above so you can see where the work should be felt.
How many sets and reps should I do?
For strength, three to five sets of three to six reps. For size, three to four sets of eight to twelve. For skill or capacity work, keep the reps well short of failure and repeat the quality rather than chasing the number.
What are the most common hollow body hold mistakes?
Most often: letting the lower back arch and holding on anyway; starting with arms and legs fully extended before you have earned it. Both are easier to catch on video than in the moment — film one set from the side and watch it back.
Can I do this without any equipment?
Yes — this version needs no equipment at all. It trains the abs, deep core using bodyweight alone, which is why it travels well and works as a warm-up, a substitute, or a full session on its own.
Is this safe if I have an existing injury?
The hollow body hold loads the lower back directly, so an existing problem there is the one to be careful about. If a rep reproduces your pain rather than producing normal training discomfort, stop the set and get it assessed. This is general fitness information, not medical advice.
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Form guide for educational purposes — not medical advice. New to training or working around an issue? Apply for coaching and get a plan built for your body.