Primary
Core
Secondary
Hip flexors
Equipment
Bodyweight
Difficulty
Intermediate
Type
Isometric
See how Hollow Rock could fit a workout
The example below shows one possible placement. Your purchased plan is built from your assessment, and Ely checks every exercise before approving it.
One-time purchase · Checked by Ely · Delivered in 1–3 business days
This page is not medical advice or a rehabilitation protocol. Ely's personal review applies to purchased workout plans and does not replace an in-person assessment by a licensed healthcare professional.
Hollow rocks add a dynamic rocking motion to the hollow hold, creating continuous anterior core engagement while building coordination. Maintaining the banana shape while rocking back and forth challenges both core strength and body control. This is a staple gymnastics conditioning exercise.
When to use it
Use for dynamic core training.
Who it's for
Intermediate to advanced for optimal results.
Start in a hollow hold with arms overhead and legs extended. Rock your body forward and backward like a banana-shaped rocking chair. The key is maintaining the hollow shape throughout—your lower back must stay rounded, not flat. Small, controlled rocks only.
Also targets: hip flexors
Want Ely to consider Hollow Rock for your plan?
Share your training details. Ely reviews the full week before anything is delivered.
Get into a hollow hold position.
Arms overhead, legs extended.
Lower back pressed to floor.
Rock forward and backward.
Maintain the hollow shape.
Keep core engaged throughout.
Master hollow hold first.
Keep the banana shape.
Small, controlled rocks.
Don't lose core engagement.
Use hollow rocks after mastering the static hollow hold. They provide dynamic core work while building the body awareness needed for gymnastics skills. Include in core circuits or as preparation for more advanced movements like levers.
Breaking hollow position.
Isometric holds like the Hollow Rock build strength at specific joint angles. This mistake changes the angle and reduces how hard your Rectus abdominis has to work. Lock into position and hold it.
Rocking too aggressively.
Isometric holds like the Hollow Rock build strength at specific joint angles. This mistake changes the angle and reduces how hard your Rectus abdominis has to work. Lock into position and hold it.
Lower back arching for optimal results.
Changing your back position during the Hollow Rock can alter the movement and make the load harder to control. Brace your midsection and keep the torso position called for by the exercise.
Intermediate to advanced for optimal results.
These ranges illustrate ways to organize training. They are not an individual prescription. Adjust them for the exercise, your experience, and the rest of your program.
Heavier loads can be useful for developing maximum strength. The range shown is an example, and the load must match your current technique and capacity.
Muscle growth can occur across different loads and repetition ranges. This example is not a uniquely effective zone; your overall program and effort also matter.
This is an example of a longer set. A repetition target alone does not establish joint safety or whether the exercise is appropriate for you.
Example: 3-4 sets of 20-30 seconds. Rest 45-60s.
Background for resistance exercises: the 2026 ACSM position stand covers healthy adults, and a load-comparison review found similar muscle growth across loads in studies using sets taken to muscular failure. These findings do not validate every exercise-specific range shown here or require training to failure.
This is one example of how Hollow Rock could sit inside a complete workout. Your plan may use different movements after Ely checks your assessment.
Sample workout
MySetPlan guides you set by set, times your rest, records your work, and tells you what to do next from the plan Ely approved.
Start My $19 WeekShare your goal, schedule, equipment, and experience. Ely checks the complete exercise selection before he approves your week.
Start My $19 Starter Week$19 once · No automatic renewal · Delivered in 1–3 business days
Frequently Asked Questions About the Hollow Rock
The Hollow Rock primarily targets the Rectus abdominis, Transverse abdominis, making it an effective exercise for core development. Secondary muscles worked during the Hollow Rock include Hip flexors, providing additional training stimulus. Stabilizer muscles engaged include Lower back.
Our library labels Hollow Rock as intermediate. That category is not an individual assessment. Review the setup, movement instructions, and safety notes, and seek qualified guidance if you are unsure how to perform it.
The programming section shows examples for Hollow Rock. The appropriate amount depends on your current ability, the exercise, and your other training. The listed ranges are not an individual prescription or a guarantee of a particular outcome.
The main equipment listed for Hollow Rock is no equipment. Check the instructions for any additional support, anchor, bench, rack, or clear space needed. The equipment label alone does not confirm that your home setup is suitable.
Good alternatives to the Hollow Rock include: Hollow Hold, V-Up. These exercises target similar muscle groups as the Hollow Rock and can be used as substitutes based on your equipment availability, gym setup, or training preferences.