HIIT, because of the intensity of the intervals, can be very tough.

由于间歇强度很高，这个训练会很艰苦。

HIIT is what it says - high-intensity - and the results are undeniable.

我们称HIIT是高强度的，他的结果不可否认。

Since HIIT is tougher on the body, it requires more energy (read: calories) to repair itself afterwards.

因为HIIT 训练计划使你的身体达到了极限，这代表着需要更多的能量（卡路里）来恢复身体机能。

With HIIT, the workouts are shorter, yes, but you'll actually be working harder than the guy on the treadmill next to you.

当你进行HIIT练习时，你的练习时间更短，但是你得到的成果将远大于那个在你隔壁跑步机那个辛劳跑步的人。

I used to teach yoga then jump right into a Les Mills Body Pump class or go home, eat lunch, then hit the hiking trails for some HIIT.

我曾经教瑜伽，然后会直接去上莱美杠铃课程，或者直接回家吃饭，然后走登山路线来做一些间歇性强度训练。