Besides, he spent a lot of time lying on the sofa, watching TV, and did little exercise.As a result, he put on so much weight that he found it difficult to chimb stairs.

• 李明过去是一个身体健康的孩子，但一年前，李明养成了乱吃零食和垃圾食品的习惯，除此之外，他还整天躺在沙发上看电视，很少运动，结果他变得大肥胖，上楼都困难。