What is the inversion bench for? Muscle pain and spinal injuries are often due to incorrect posture and lack of movement. The Kettler Apollo gravity bench (the only product approved for orthopedic use) is ideal for releasing the stress accumulated during the day, promoting relaxation of the muscle bands that surround our entire spinal column, also eliminating the unpleasant sensation of pain and blockage of the vertebrae. Bench equipped with an anti-tipping safety system and quick adjustment of the inclination angle.