Corkscrew — Small Circles: A Complete Guide
Quick Intro
Corkscrew — Small Circles is a mat Pilates exercise performed lying on the back with the legs together and extended to the ceiling, circling both legs through a tight oval only a few inches across instead of the wide sweep of the full movement, keeping the pelvis far easier to hold still while the same rotational pattern is trained. The circle shrinks while the legs still travel in every direction, which makes this the easier way into Corkscrew.
Equipment Needed
No equipment is required. A Yoga Mat underneath is an optional way to protect the spine from a hard floor during the circling.
Why It Matters
Even a tight, few-inch circle asks the hips and hamstrings to move through several planes at once, and holding that control across repeated circles takes staying power. The waist muscles along the side of the torso (obliques) drive and control the small rotation throughout, and a deep core muscle that wraps around the torso like a corset (transverse abdominis) keeps the circle from turning into a swing. The deep hip flexor (hip flexors, iliopsoas) carries the weight of the legs around the tight oval, the inner thigh muscles (adductors) keep the legs sealed together and the lower back muscles (erector spinae) keep the pelvis from lifting off the mat.
When to Do It
Corkscrew — Small Circles works well in the supine abdominal portion of a Pilates mat session, usually placed as the entry point before the full-range circle is attempted. Two to three sessions a week is a reasonable pace for building this smaller, controlled rotation.
Anyone with a current lower back issue should get individual guidance before adding this exercise, since even a small circle asks the pelvis to resist a rotating load.
Getting Ready
A few rounds of lifting both legs together to the ceiling and holding briefly confirm the starting position feels stable before any circling begins. A slow, single-direction leg sweep with the knees slightly bent previews the multi-planar control the tight circle will demand.
Step-by-Step Instructions
1. The setup. Lie flat on the back with the legs pressed together, reaching straight up toward the ceiling.
2. The descent. Lower both legs together just a few inches toward one side, keeping the circle small from the start.
3. The sweep. Continue the tight circle through the bottom and up the other side, keeping the pelvis pinned to the mat.
4. The reverse. Complete the small circle back to the starting position, then repeat in the opposite direction for the next rep.
How Many, How Often
Corkscrew — Small Circles is dosed by reps, with each small circle counting as one.
| Level | Where you’re at | What to do |
|---|---|---|
| Beginner | New to keeping the pelvis still through any circle | 2 sets of 3 to 4 reps per direction, circle kept very tight |
| Intermediate | The pelvis stays still through a slightly larger small circle | 2 to 3 sets of 4 to 6 reps per direction |
| Advanced | Comfortable expanding the circle while control holds | 3 sets of 6 to 8 reps per direction |
The pelvis staying still matters more here than how far the legs travel, since a wider circle only counts as progress once stillness through the current size is automatic.
Modifications and Variations
The step up from this version is the full circle.
Compared to Corkscrew, this version keeps the oval only a few inches wide, which removes most of the leverage the legs would otherwise swing against the obliques. Once the lower back can stay flat on the mat through several small circles without a hint of rocking, widening the sweep toward Corkscrew’s full range is the natural next step.
Common Mistakes to Avoid
Letting the circle grow larger than intended. Widening the sweep to make the exercise feel more like the full version, before the pelvis can hold still through a small one, defeats the purpose of starting here. Keeping the circle deliberately tight is what makes this variation useful.
Allowing the pelvis to tip even slightly during the sweep. A small circle that still lets the hips rock loses the one advantage this version offers over the full-range movement. The hips should feel anchored to the mat through the whole small oval.
Letting the legs drift apart during the circle. Allowing even a slight gap to open between the legs reduces the precision this smaller, more controlled version is meant to build. Keeping the legs sealed together protects the quality of the pattern.
After Your Set
Drawing both knees to the chest and holding for a few slow breaths unwinds the lower back after a set of tight, repeated circles. Stepping one foot back into a gentle standing lunge, hips pressed slightly forward, releases the hip flexors that held the legs up throughout.
Going Deeper
This exercise usually works well as a way to build the multi-planar control the full Corkscrew needs, without the load of a wide-swinging pair of legs testing that control before it exists. A circle that’s already comfortable often gets left small out of habit. Growing the oval by an inch or two at a time, only once the current size feels still, leads to the full version sooner than staying at the same small size.
Someone new to this exercise generally manages a very tight, controlled circle within a few sessions, then works toward a noticeably larger small circle over two to three weeks.
How to Know You’re Improving
- A pelvis that stays anchored to the mat through the whole circle
- Legs that stay sealed together throughout the sweep
- A circle that can grow in size while the pelvis stays still
- A rotation that feels driven by the waist, not swung by the legs
A pelvis that never tips matters more than how wide the circle eventually gets.
Muscles Worked
- Obliques (the waist muscles along the side of the torso, driving and controlling the small rotation throughout)
- Transverse Abdominis (a deep core muscle that wraps around the torso like a corset, keeping the circle from turning into a swing)
- Iliopsoas (the deep hip flexor, carrying the weight of the legs around the tight oval)
- Adductors (the inner thigh muscles, keeping the legs sealed together)
- Erector Spinae (the lower back muscles, keeping the pelvis from lifting off the mat)
FAQ
Why start with such a small circle instead of the full range? A tight circle removes most of the leverage the legs would otherwise use against the obliques, so the pelvis-stability skill this exercise builds can be learned before a wider, heavier sweep is added on top of it.
When is it time to widen the circle? When the current circle size leaves the pelvis still, with no rocking or tipping anywhere in the rotation, expand it a little and work gradually toward the full Corkscrew.
Is some hip flexor or oblique fatigue after this exercise normal? Yes, fatigue through the hip flexors and obliques after several small circles is expected. Sharp pain concentrated in the lower back is a different matter, worth easing off for and mentioning to a doctor or physical therapist if it doesn’t settle on its own.
Is it better to stay with the small circle for a while or move on quickly? Staying with the smaller circle for a few weeks while the pelvis-stability skill solidifies is more valuable than rushing toward the full range before that control is in place.
How often should the small-circle Corkscrew be practiced? Two to three times a week, as part of the supine abdominal portion of a broader mat session, is enough repetition to build this smaller, controlled rotation.
Related to Corkscrew as the harder, full-range version to move to once the pelvis holds still through the tight circle.