Pilates is above all a global, coherent, and deeply thought-out system, designed by Joseph Pilates as a method to strengthen the body, improve posture, mobility, and overall health. Each exercise, each detail of alignment or breathing, is an opportunity to refine body awareness. The work often begins with forgotten areas, such as the toes or ankles, and then expands to the overall alignment of the body, the activation of the “powerhouse” and spinal mobility. This progressive and precise approach allows everyone, regardless of level, to embrace the fundamental principles of Pilates: centering, control, concentration, precision, flow, and breathing.
Joseph Pilates did not only create exercises on the mat, but also developed a series of specific apparatuses—such as the Reformer, Cadillac, Wunda Chair, Barrels, and the Guillotine—each playing a precise role in the evolution of the practice.
Matwork vs. Apparatus: two complementary approaches
Matwork exercises (on the floor with a mat) develop core strength, motor control, and endurance using body weight. In contrast, spring-based apparatus such as the Reformer or Cadillac add adjustable resistance or support depending on the practitioner’s level, allowing exploration of movement with greater range, precision, or load.
Both approaches complement one another: Matwork refines stability and body awareness, while the apparatus provides postural guidance, either facilitating or challenging movement as needed. Together, they embody the progressive and structured logic of the Pilates system, as its founder envisioned.
Until recently, Pilates apparatus were less known to the general public than matwork, as they were used mainly in private or duet sessions. Most people associated the word Pilates with matwork exercises, often practiced in group classes. But in recent years, apparatus work has gained recognition, and very recently Reformer group classes have multiplied throughout the world.
The Reformer: an iconic apparatus
The Reformer is one of the most emblematic pieces of the method. With its moving carriage, adjustable springs, and straps, it allows deep muscular work while improving posture, flexibility, and balance. It encourages fluid, controlled movements with tailored resistance, strengthening muscles without harmful impact on the joints.
Other apparatus: depth and precision of practice
The Cadillac (and Wall Units)
The Cadillac is a central apparatus in the classical method, designed to guide, correct, and strengthen through a system of suspended springs. In smaller studios, it is often replaced by a wall-mounted version, the Wall Unit, which allows much of the same work while saving space. Both provide support and resistance, improve postural alignment, stability, and flexibility, and strongly engage the powerhouse. Some Cadillac exercises cannot be performed on the wall unit; however many studios offer group classes using the wall unit and combining matwork with exercises traditionally performed on the Cadillac.
The Chairs
- Wunda Chair
The Wunda Chair is both compact and extremely demanding. It allows work in seated, standing, or lying positions, intensely engaging the core while strengthening the arms, legs, and postural muscles. It is ideal for developing functional strength, balance, and coordination in a minimalist format.
- Baby Chair
The Baby Chair (or Arm Chair) is less known than the Wunda or High Chair. It mainly targets the upper body, promotes chest opening, and strengthens the arms, shoulders, and postural muscles. Its work is subtle, precise, and often overlooked, yet highly effective, particularly for correcting slumped postures or relieving neck tension.
- High Chair
The High Chair, also called the Electric Chair, is a powerful apparatus combining resistance and support. With its backrest, pedal, and springs, it provides a stable framework for strengthening postural alignment and developing functional strength, especially in the legs, trunk, and shoulder girdle. It allows both standing and seated exercises, making it particularly useful for improving balance and proprioception.
The Barrels: mobilizing the spine and opening the upper body and hips
- Ladder Barrel
The Ladder Barrel combines a vertical ladder with a rounded barrel, forming an ideal tool to stretch and strengthen the back, hips, legs, and shoulders. It promotes spinal lengthening while emphasizing fluidity and control of movement. Exercises on the Ladder Barrel enhance body awareness and help restore a natural, balanced posture.
- Spine Corrector
The Spine Corrector was designed to improve spinal mobility, open the chest and hips, and strengthen the deep core muscles. Its curved shape allows gentle exploration of back and hip extensions. It also helps work on breathing, pelvic stability, and movement fluidity, while respecting the spine’s natural curves and correcting postural imbalances.
- Small Barrels
Small Barrels are small arcs designed to support the natural curves of the spine. They allow extension and side-bending exercises while respecting spinal alignment. They are particularly effective for loosening the back, opening the chest and hips, releasing tension, and deepening body awareness.
A method to be rediscovered as a whole
To truly understand and integrate the benefits of Pilates, it is essential to approach it as a complete system, just as Joseph Pilates envisioned it. Matwork, apparatus, breathing, movement control, and body awareness form an inseparable whole. By combining the different formats and tools, one discovers the full richness, logic, and depth of this timeless method.
Reformer Pilates: between method and fitness
Today, many studios and gyms offer what they call “Reformer Pilates,” often a very dynamic practice focused on quick toning and physical intensity. While these classes can be effective for muscular conditioning, they sometimes stray from the essence of the method: conscious work centered on precision, breathing, control, and the mind-body connection.
Joseph Pilates never designed his method as a simple series of exercises, but as a complete system of health and well-being, with logical progression, fine attention to alignment, and impeccable movement quality. Practicing only on the Reformer, in a fitness-oriented way, without knowledge of the other apparatus or Matwork, means discovering only a superficial part of the richness of classical Pilates.
Number of participants on Reformers: safety and quality
It is essential not to overcrowd Reformer classes, particularly for safety reasons. While highly effective, this apparatus requires attentive supervision, especially for less experienced practitioners. Too many participants limit the teacher’s ability to observe, correct, and adjust individually, increasing the risk of poorly executed movements or even injuries.
Beyond safety, overly large groups also make it harder to give clear instructions and personalized corrections. This can affect the quality of instruction and slow progress. In contrast, smaller groups allow more precise teaching, individualized attention, and a safer, more effective practice.
Private or semi-private lessons: which approach to choose?
In private or duet/trio lessons, the work is entirely personalized. The teacher adapts exercises according to specific needs, conditions, and goals, using the full range of apparatus and ensuring precise, safe guidance.
In small group classes (often 6 to 8 people), you benefit from individualized supervision while enjoying the group’s energy. The small numbers allow the teacher to give tailored guidance. However, the work is generally limited to Matwork (and more recently Reformer exercises in some studios) with small props, without access to the full range of apparatus.
How to choose?
- Private sessions are ideal if you have specific goals (rehabilitation, performance, posture, targeted physical preparation). The teacher adapts every exercise to your body and needs. This option is also best if you have physical limitations or conditions. It is the most expensive, but offers tailored guidance, highly effective for quick progress or correcting deep imbalances.
- Small group are perfectly suited for regular, motivating, and structured practice, with personalized support within a small group. This option is possible even with certain physical limitations, as long as they are minor or well understood, and the teacher is informed beforehand. More affordable, small group sessions still allow for good individualized attention while sharing the cost. Often studios offer duets and trios on the apparatus.
Whether you choose group, private sessions or duets/trios, it is essential to keep in mind that quality of movement matters more than quantity. By respecting the spirit of the method and exploring its many facets, everyone can gain lasting benefits adapted to their needs, abilities, and pace. Rediscovering the full depth of the Pilates method also honors its creator’s legacy, helping each person find a strong, mobile, aligned, and aware body.






