Are you in good shape?

The training is hard.

I'm practicing judo.

I have to break in my shoes.

你身体状况好吗?

训练是辛苦的。

我正在练习柔道。

我必需让鞋子合脚。

解说：
训练师(trainer)如今常说I have to break in my shoes.“这双鞋子很合脚。”These shoes fit me very well.“尺寸合脚吗?”这样问时，可以说Is the size all right?新生和新员工可以称为new boy或new girl，“我们必须锻炼我们的新进人员”可以简单地说We have to train our new boys.(or girls)。“他练得很勤快。”可以说He's training very hard.