價格：免費
更新日期：2019-06-25
檔案大小：21M
目前版本：1.0
版本需求：Android 4.0.3 以上版本
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"300 sit-ups" is a training program to rapidly develop your abdominal muscles.
This program will allow you to strengthen your abdominal muscles, and if you exercise regularly, you sculpt a muscular stomach.
In addition, it is worth to exercise the abdominal muscles because they are responsible for many important functions in the body.