Before revision: A vibrating belt machine is a device that was promoted to passively reduce body fat through the use of an oscillating or vibrating belt around the exercise subject's waist, without active exercise by the user.
After revision: 200px|Actress Vivienne Segal using a "Battle Creek Health Builder" from an advertizement in the November 1, 1927 VogueA vibrating belt machine is a device that was promoted to passively reduce body fat through the use of an oscillating or vibrating belt around the exercise subject's waist, without active exercise by the user.