| 摘要 |
A facial muscle training too has weight portions (25) provided at the ends of left and right arms (31). A orally held portion (24), which is held by the lips, is provided between the arms (31). The arms (31) vibrate in resonance when the orally held portion (24) is vibrated in the vertical direction at a frequency of less than 6.50 hertz. Accordingly, the weight of the weight portions (25) acts as load on the orally held portion (24) and a facial muscle training effect is achieved. |
