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2. Swap your chair for a fitness ball 用减肥球代替你的椅子
You might feel silly but sitting on a fitness ball instead of a chair when you watch telly will help tone up your belly. You have to use your muscles, especially your stomach muscles to balance and stay on the ball.
也许你觉得这样做有点傻，竟然坐在一个减肥球上而不是日常坐惯的椅子上来看电视；然而这非常有利于强健你的腹部，当你不得不用你的肌肉，尤其是您的肚子上的肌肉来平衡坐在球上的身体时。
