Although you don't pronounce the equals sign, it's appropriate that IM=X (Integrated Movement eXercise) resembles a scientific equation: it applies modern research in cardiovascular health and spinal anatomy to the time-tested discipline of Pilates. Since it was founded in the late 1990s, this fitness method has drawn the attention of media outlets such as Shape, Self, and the New York Times.

The program’s concept stemmed from founder Elyse McNergney’s Pilates certifications, master's in movement science from NYU, and master's of education in exercise physiology from Columbia University. The method aims to teach students how to stabilize core-muscle groups while keeping the spine elongated and safe during workouts.

Its ideal outcome is a decompressed spine and better posture. The program has also been used to rehabilitate professional athletes, dancers, and patients suffering from chronic pain.