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No time is one of the biggest excuses people use to avoid exercise,
没有时间是人们用来逃避锻炼的最大借口之一。
so gyms in the US are increasingly offering quick, high intensity workout classes for 20, 25 or 30 minutes,
因此，美国的健身房越来越多地提供20、25或30分钟的快速、高强度的健身课程，
as express fitness gains popularity among people trying to carve out time for exercise in their busy work and social schedules.
快速健身正在日益受大家欢迎，在繁忙的工作和社交安排下，人们试图挤出时间健身。
It's a quick 25 minute class. I can go take my lunch, come here, get my heart rate up,
这是一个25分钟的快速课程，我可以先去吃午饭，再来这里体验脉动的感觉，
sweat all the toxins out of my body and then clean up and get back to work within my hour.
排除毒素一身轻松，然后洗个澡，马上就能去上班。
High intensity interval training known as HIIT
一种被称为“HIIT”的高强度间歇性训练
was recently ranked number one on the American College of Sports Medicine's worldwide survey of fitness trends.
最近在美国运动医学学院全球健身趋势调查中排名第一。
No longer is the trend to workout for two or three hours several days a week
现在的趋势不再每天锻炼2到3个小时，每周几天，
so people want to get this high intensity workout in a shorter amount of time
人们想要在更短的时间内进行高强度的锻炼，
so what we're delivering is 25 minute express HIIT classes.
所以我们提供的是25分钟的HIIT课程。
Most people are good enough to start off in one of these high intensive programs
大多数人都能很好地开始这些高强度的项目，
but they need to understand them correctly says physical therapist Jon Kaufmann.
物理治疗师乔恩·考夫曼表示称，但他们需要正确理解这些项目。
Most of the work is in a 10 to 20 second high interval where you can't do anymore.
多数都是10-20秒的高强度间隔训练，你会精疲力尽，
Your body is about to fatigue following by a rest period where it could be 30 seconds,
你的身体会非常累，之后是30秒的休息，
it could be one minute but the point is to go as hard as you can and then let your body have that time to rest.
或许是一分钟，但重点是尽力去做，让你的身体有时间休息。
Back-to-back 25-minute classes are also popular at Lagree Fitness Studio in Los Angeles,
在洛杉矶拉格里健身房，背靠背连续25分钟课程非常流行。
fitted out with a specially designed Supraformer inspired by classic pilates reformers,
该健身房配备专门设计的“Supraformer”仪器，它的灵感来自经典普拉提改良者，
all controlled by the instructor's iPad.
仪器由教练控制。
It's unlike, anything else that you see. It moves up, It moves down and side to side.
它和你看到的任何东西都不一样，它会上下移动，从一边到另一边。
So why is it good? Ever walked uphill? Yeah, exactly it's like that but in a high intense version of a workout.
它为什么这么棒？见过爬山的吗？很像它，但这个强度很高。
And gym goer Jackie Cohenca says it's working.
健身爱好者杰姬·科恩卡说这种方法有效。
I find doing this workout tightens your stomach, keeps your butt tight,
我发现做这个锻炼可以改善腹部，让你的屁股紧绷，
really leans you out, and it is invigorating, I want to do more. I could do it seven days a week now.
真的去伸展你的身体，让你精力充沛，我想做更多，我现在可以一周做七天。
The US Department of Health and Human Services says that only one in three adults
美国卫生和公众服务部表示称，只有三分之一成年人
receive the recommended amount of physical activity each week.
每周能达到推荐的运动量。
Jill Craig, VOA News, Washington.
美国之音新闻，吉尔·克雷格华盛顿报道。
