What is the theme of Amway's nutrition and health tour?

The theme is "Eat a dynamic balance and have a healthy weight", and advocate "Eat smart, move smart and have a healthy weight". In recent years, backhand touching navel, "A4" waist, vest line and mermaid line ... In recent years, more and more fitness hot words related to "waist" have become popular on the Internet. "Waist" is the focus of bodybuilding, and it is also an important indicator to observe physical health.