【實用運動app】Trainer for Sit Ups|最夯免費app-綠色工廠好玩App

The new trainer for sit ups. It helps you to reach your individual goals for the sit ups. Sit ups are one of the basic exercises for the middle body and shouldn't be underestimated by anybody or even neglected. Individually configurable and very easy to understand app. With discipline and ambition a guarantee to success!