80-90% of people have back pain, which is often just muscle tension or fascial stiffness caused by our bad posture. Incorrect sitting, lifting or carrying are often the cause. Backfit strengthens and stretches the straight and lateral muscles of the back, abdomen, trunk, back, neck and buttocks. The spine is mobilized and fine small muscle groups are activated. Backfit is suitable for all age groups and is often performed with an exercise ball.