这似乎和一开始建议的，缓慢开始有些矛盾。但是对于一个刚开始跑步的人来说，重要的不是让你的身体变得更为紧张而在第二天感到酸痛；重要的是能够让你每天坚持锻炼。
This may sound contradictory to some of the advice above about starting slowly, but the key is to go very easy in the beginning -nothing that will stress your body out or make you sore the next day.
虽然她年纪很大了，但还每天坚持游泳上千米，身体锻炼得很健康。
Although she was very old, but swimming on the meters every day, exercise is very healthy.
刚开始的时候有些困难，但只要连续坚持21天，就能形成每天锻炼身体的新习惯。
It's difficult at first, but once you've done it everyday for 21 days, it will become your new habit.
刚开始的时候有些困难，但只要连续坚持21天，就能形成每天锻炼身体的新习惯。
It's difficult at first, but once you've done it everyday for 21 days, it will become your new habit.
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