Reformer Pilates, a workout utilizing a specialized bed with springs, straps, and pulleys, has seen a surge in popularity, with the number of studios in the UK reportedly increasing tenfold since 2024. This low-impact, full-body exercise is designed to strengthen and tone muscles by providing controlled resistance, which fans say targets areas more effectively than traditional mat-based Pilates.
Pilates instructor Rhian Cowburn explains that the reformer machine allows for a wider range of movements and recruits more muscle groups due to the added resistance from springs. This can lead to quicker perceived progress in strength and muscle tone compared to mat classes. The springs also reduce pressure on joints, making it beneficial for individuals with injuries, arthritis, or mobility issues, and can even facilitate standing exercises suitable for older adults.
However, the growing popularity of reformer Pilates is accompanied by concerns over its cost and safety. Classes can be significantly more expensive than mat Pilates, with some London studios charging up to £80 per session, compared to around £15 for a mat class. Experts have also raised alarms about potential injuries, with some describing the industry as the 'wild west' due to a lack of qualified instructors. Reports of serious incidents include a case in 2019 where a violinist suffered a broken elbow when a reformer machine collapsed, and another last year where a Pilates teacher was injured by a dislodged metal frame.
These incidents have led to warnings about the 'potentially dangerous' nature of the exercise. A key risk arises when participants, unfamiliar with the mechanics, attempt to adjust the springs themselves, which can inadvertently increase the difficulty to unsafe levels. Additionally, certain movements may be harder to modify on a reformer during pregnancy. Cowburn advises that reputable studios typically require instructors to hold recognized certifications, such as a Level three Pilates qualification, which can mitigate risks. She emphasizes that serious injuries are rare, particularly when participants follow instructor guidance.
The origins of reformer Pilates trace back to Joseph Pilates, who, during World War I, adapted hospital beds with springs to help rehabilitate patients. The modern reformer machine builds on this concept, offering a versatile tool for strength training and rehabilitation.