The corkscrew is a classical Pilates mat exercise in which you lie on your back with both legs raised together and draw controlled circles with them. It trains the deep abdominals and obliques to keep the pelvis and spine stable while the legs move, and it improves coordination and control through the hips. Beginners keep the circles small with the pelvis still on the mat, while advanced practitioners lift the hips and roll through the spine in a larger version. The key is control: the circle should be only as big as you can move without your back arching or your ribs popping up.
This guide explains the benefits, the beginner and advanced versions step by step, how to breathe, modifications, how it fits in a Pilates routine, and common mistakes.
Versions of the corkscrew
| Version | Description | Best for |
|---|---|---|
| Modified corkscrew | Knees bent or legs higher, very small circles, pelvis stays on the mat | Beginners and those building core control |
| Intermediate corkscrew | Legs straight at about 90 degrees, circles with pelvis stable | Those with good abdominal control |
| Advanced corkscrew | Legs overhead, hips lift and roll through the spine as legs circle | Experienced practitioners with strong control |
Benefits
- Strengthens the deep abdominals and obliques.
- Trains pelvic and lumbar stability during limb movement.
- Improves coordination and control.
- In the advanced version, adds spinal articulation and mobility.
- Teaches breathing with movement.
How to do the intermediate corkscrew
- Set up: lie on your back, arms long by your sides, palms down.
- Lift the legs: raise both legs together to about 90 degrees, squeezing the inner thighs.
- Engage the core: draw the abdominals in and keep the ribs soft toward the mat.
- Shift the legs: move the legs together slightly to the right.
- Circle down: lower them in an arc toward the mat, only as far as you can keep your back stable.
- Circle up: sweep them across and back up to the left and to the starting point.
- Reverse: repeat the circle in the other direction.
- Repeat: three to five circles in each direction.
The advanced corkscrew
In the advanced version, you start with the legs extended overhead, hips lifted and weight on the upper back and arms. As the legs circle to one side, you roll down through the spine one vertebra at a time, sweep the legs around the bottom of the circle and roll back up to the start. This version requires strong abdominal control, spinal mobility and good neck and shoulder position, and should only be attempted after mastering the basic version under guidance.
How to breathe
A common pattern is to inhale as the legs begin the circle and exhale as they return to the top. Exhaling as the legs come back up helps engage the abdominals. The most important thing is not to hold your breath.
Modifications
- Bend the knees to reduce the load on the abdominals and lower back.
- Keep the circles very small.
- Place a small cushion under the head if the neck feels strained.
- Keep the legs higher, closer to vertical.
Where it fits in a routine
In the classical Pilates mat order, the corkscrew comes in the middle of the sequence, after exercises such as the single-leg and double-leg stretches and spine stretch forward. In modern classes, instructors place it wherever it suits the focus, often as a core control or oblique exercise.
This is general fitness information, not medical advice. If you have back, neck or hip problems, are pregnant or recovering from surgery, speak to a healthcare professional before trying the corkscrew, and learn it with a qualified Pilates instructor.
Common mistakes
- Circles too big: the lower back arches off the mat.
- Legs separating: squeeze the inner thighs together.
- Using momentum: move slowly with control.
- Tension in the neck and shoulders: keep them relaxed.
- Holding the breath: breathe steadily throughout.
Muscles the corkscrew works
| Muscle group | Role in the corkscrew |
|---|---|
| Rectus abdominis | Controls the lift and lowering of the legs and pelvis |
| Obliques | Control the circular, side-to-side movement of the legs |
| Transversus abdominis | Stabilises the trunk and keeps the lower back supported |
| Hip flexors and adductors | Hold the legs together and move them through the circle |
| Upper back and shoulders | Press the arms into the mat for stability, especially in the advanced version |
Where the corkscrew sits in the classical mat order
In the classical Pilates mat sequence, the corkscrew comes in the middle of the series, after the open leg rocker and before the saw. At this point the body is warm and the abdominals have already been prepared by exercises such as the hundred, the roll-up and the single and double leg stretches. Many instructors in contemporary Pilates classes move it around or pair it with other rotational exercises, but it is almost always taught after a thorough core warm-up.
Preparatory exercises
- Pelvic tilts: Build awareness of moving the pelvis while keeping the upper body still.
- Knee sways: Lie on your back with knees bent and let them sway side to side under control, a gentle version of the corkscrew movement.
- Tabletop leg circles: Keep the knees bent at 90 degrees and trace small circles with both knees together.
- Single leg circles: Practise controlled leg circles one leg at a time with the pelvis stable.
- Roll-over preparation: Practise lifting the hips slightly off the mat with control before trying the advanced corkscrew.
Who should take care
The advanced corkscrew places load on the neck and upper spine, so it is not suitable for everyone. People with neck or back problems, osteoporosis, recent abdominal surgery, or who are pregnant should speak to a doctor or qualified instructor before trying it and use a gentler variation instead.
How to progress safely
Move from one version to the next only when the current one feels controlled for several repetitions. A good test is whether you can complete three to five circles in each direction without the lower back arching, the shoulders lifting or the breath being held. Start with small circles and grow them over weeks rather than in one session. If the movement starts to feel jerky or rushed, return to the easier version and rebuild control.
Using the corkscrew on other equipment
Many studios teach variations of the corkscrew on the reformer or with small props. A small ball between the knees or ankles can help beginners keep the legs connected, while a soft pad under the head can make the mat version more comfortable. These tools are useful for learning the pattern before moving to the classical mat version.
Frequently asked questions
What muscles does the Pilates corkscrew work?
The deep abdominals and obliques, with support from the hip flexors and inner thighs.
Is the corkscrew safe for beginners?
The modified version with small circles and bent knees is suitable for many beginners. The advanced version is not.
How many repetitions should I do?
Three to five circles in each direction is typical in Pilates.
