By exercising, children will become happier and fitter.
通过锻炼，孩子们会变得更快乐、更健康。
I've never been happier or fitter.
我从未如此地快乐和惬意。
Running has the power to change your life. It will make you fitter, healthier, even happier.
跑步有改变你生命的力量，跑步能使你身材更匀称，更健康，更快乐。
This is one of the foremost reasons why people want to start Practicing Yoga - to feel fitter, be more energetic, be happier and peaceful.
这是最重要的原因之一，人们为什么要开始练习瑜伽-感觉钳工，更有力，更快乐和平静。
After every run I feel fitter, happier and motivated to keep progressing.
每次跑完之后，我都觉得体能更佳、更愉快和更积极进取。
After every run I feel fitter, happier and motivated to keep progressing.
每次跑完之后，我都觉得体能更佳、更愉快和更积极进取。
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