1. Burn Belly Fat: By raising the temperature of the abdominal core, the ab belt trainer helps you sweat off excessive water and burn more calories to achieve the goal of trimming.     2.  Improve Body Posture: The waist trimmer also provides extra support to your back during workout helping improve and maintain body posture. It is also helpful if you are suffering from arthritis, muscle pain, lumbar herniation and dislocation.