The Pilates Chair: What It Does That a Reformer Can't

The short answer is that it makes you hold yourself up. On a reformer you spend a good deal of your time lying down, with a carriage under your spine and a footbar to press into, and that support is exactly what makes it such a forgiving place to learn. The chair takes the support away. You sit on a small padded box, or kneel on it, or stand beside it, and you press a spring-loaded pedal while nothing holds your torso in position except you. That is the whole difference, and it is a larger one than it sounds when you read it on a page.

I have taught on both apparatus for a long time, and the chair is the piece my students are most likely to walk past for a year without touching. It is small, it is odd-looking, and it does not promise anything. Then they try six minutes on it and understand why the classical studios keep one in the corner.

What the Chair Actually Is

The Pilates chair, often called the Wunda chair, is one of the original pieces of apparatus Joseph Pilates engineered, and it was built around a constraint rather than an ambition. Complete Pilates notes that he designed it to convert quickly into an armchair so it would fit comfortably into small New York apartments. Pilates Anytime adds that he made it for studio clients to take to their summer houses. It was, in other words, the original home apparatus, designed to disappear into a living room.

The build is plain. A wooden base topped with a padded seat, which Pilates Anytime nicely describes as the world's smallest exercise mat. Underneath is a pedal that travels up and down, attached to springs on either side that offer strong, medium or low resistance depending on where you hook them. The pedal may be a single piece or split down the middle so each foot or hand can work independently, and two detachable handles slot into either side of the box when you need something to hold.

Why It Feels Harder Than It Looks

Three things conspire. First, your base of support is tiny. A reformer carriage is long enough to lie on; the chair seat is roughly the size of a stool, so whatever you are balancing on is smaller than you are used to. Second, it is backless. Pilates Anytime points out that unlike the high chair, which has a tall back, the Wunda chair gives you almost no support behind you during footwork, so the balance demand sits with you from the first repetition.

Third, and this is the one people feel in their breath, the load travels downward. On a reformer the carriage slides along a horizontal track and gravity is mostly a bystander. On the chair you are pressing a pedal down, or resisting it up, with your own body weight stacked above it. Complete Pilates is straightforward that chair work is generally more challenging than the reformer equivalent, and that the reformer usually offers more genuinely beginner-level exercises. That matches what I see in the room.

The chair does not let you cheat with momentum, so it teaches you what your exhale is actually worth. Most people discover they have been holding their breath on the reformer and never noticed.

Cora Linwood

Chair vs. Reformer at a Glance

Neither piece is better. They answer different questions, and in the classical system they were always meant to sit alongside one another. Gratz Pilates describes the chair as an integral part of that system, designed to complement and reinforce the work done on the mat, reformer and Cadillac.

Quality	Chair	Reformer
Position	Mostly seated, kneeling or standing	Often lying down
Back support	Minimal, backless	Carriage supports the spine
Balance demand	High from the start	Introduced gradually
Beginner range	Narrower	Broader
Footprint	Very small	Needs a dedicated space

Gratz frames the distinction as one of vertical alignment challenges and balance demands that differ from what you meet on the reformer or the mat. That is a precise way of saying: the chair asks you to organise yourself upright, against gravity, on a small surface.

Six Exercises Worth Knowing

If you want a sense of the repertoire before you book anything, these come up again and again in chair work:

• Swan. Spinal extension with the pedal giving you feedback under your hands rather than a flat floor.
• Mermaid. Side bending, which trains the lateral flexion Gratz lists among the chair's contributions.
• Standing Rolldown. Sometimes called Hamstring 1, and an honest test of whether your hamstrings and your control agree with each other.
• Mountain Climber. A standing balance and hip exercise that shows you immediately how small your base really is.
• Pull-Up. Pressing down through the arms with the torso lifted, which is where upper body and centre have to cooperate.
• Triceps Press. Straightforward, unglamorous arm work that most mat repertoire simply does not cover.

Between them, the chair repertoire develops core strength, upper and lower body strength, flexibility through the hamstrings and hip flexors, balance and control. What it emphasises most, in the classical framing, is precision rather than volume.

Who It Suits, and Who Should Wait

The chair earns its keep in a few specific situations. Complete Pilates points to rehabilitation clients, to people who cannot comfortably lie flat, to athletes building strength, and to advanced practitioners working towards the more acrobatic repertoire. That second group is worth underlining. If lying on your back is uncomfortable, whether because of pregnancy or dizziness or something else, an apparatus built around upright work solves a real problem. Pilates Anytime notes that split-pedal models in particular suit pregnancy and injury recovery.

Who should wait? If you are brand new to the method, start where the repertoire is broader and the spine is supported, and come to the chair once you know what your own neutral feels like. And if you are working around an injury, a pregnancy, or a condition affecting your bones or balance, please talk to your physiotherapist or midwife before you book, and tell your instructor what they said. I would rather teach you something modest that is right for you than something impressive that is not. Complete Pilates makes the same point about working under a qualified instructor, and I would not send anyone onto this apparatus unsupervised for their first sessions.

The Honest Verdict

I should be clear about the limits of what I can tell you. The case for the chair is craft knowledge, built from a century of teaching and from the logic of how the apparatus loads the body. It is not built on clinical trials comparing chair work to reformer work, because those trials have not really been done. None of the sources I trust on this apparatus cite peer-reviewed research, and I am not going to pretend otherwise.

What I can say is this. If you have been on a reformer for six months or more and your progress has flattened, an hour a week on the chair will find the gaps quickly, especially in balance, in single-sided strength and in upright control. If you are still learning where your ribs belong, leave it a while. And if you are shopping for something to put in a spare room, remember that this was a living-room apparatus from the beginning, and that the small footprint is the point rather than a compromise.

Frequently asked

Is the Pilates chair harder than the reformer?

Generally yes, for the same movement. The chair is backless, your base of support is small, and you are working against gravity rather than along a horizontal carriage. The reformer also offers a broader range of genuinely beginner-level exercises.

Can a complete beginner start on the chair?

It is not the usual starting point. Most people are better served learning on the mat or reformer first, where the spine is supported and the repertoire is wider. Come to the chair once you recognise what your own neutral position feels like.

What is the difference between a Wunda chair and a high chair?

The Wunda chair is backless, which is what creates its balance demand. The high chair has a tall back that provides support. Both were part of Joseph Pilates' original apparatus, but they ask very different things of you.

Is the Pilates chair safe during pregnancy?

It can suit pregnancy precisely because it avoids lying flat, and split-pedal models are often recommended for this. That said, pregnancy changes balance and joint stability, so check with your midwife or physiotherapist first and tell your instructor what they advised.