Ronaldo's first belly-slimming gadget intelligent exercise Utilizing the most recent technology, the abdomen can be made slimmer and tighter without requiring much effort or weariness. The device creates vibrations that encourage the stomach muscle to contract and expand, which tightens the area and increases its capacity to lose fat. It is based on scientific research and has been proven effective globally. It eliminates sagging and accumulated fat on the arms, so it can also be applied there. Ronaldo is the name of the product because football player Ronaldo promoted it. advantages of abdominal exercise One of the most popular exercises for strengthening the abdominal muscles is the stomach exercise. The abdominal muscles, which are a component of the core muscle group, are the focus of stomach exercises.