【小编摘要】毛毛虫要减肥健身了，神马方式最适合它呢？
I tried all the fitness fads, but my doctor was right all along——walking is still the best exercise.
我尝试了许多当下比较时尚的健身方法，最后还是觉得医生说的是对的：最佳运动方式始终是散步啊！！
知识点津：
1. fitness ['fɪtnəs] n. 健康；适当；适合性
fitness training健身训练
2. fad [fæd] n. 时尚；一时的爱好；一时流行的狂热
passing fad 一股风；一时的风潮
His interest in photography is only a passing fad.
他对摄影的爱好仅是一时的兴致。
3. all along 自始至终，一直