The latest in extremely dangerous social media trends is the A4 waist challenge, a "fitness" test for people to judge whether their waists are paper-thin.

最近在互联网上极度盛行的潮流就是A4腰挑战了。这个挑战是一种“健身”测验，让人们判断他们的腰是否和A4纸一般大小。

The topic is trending on the Chinese social media site Weibo, and 110,000 users have posted photos holding pieces of A4 paper, measuring 8.27 inches wide, up to their waists and tagging #I Have An A4 Waist.

这个话题在中国的社交网络微博上十分流行，有11万用户上传了他们在腰部手持一张A4纸的照片（大约8.27英寸宽）并加上了#我有A4腰的话题。

If they can hide their waists behind the paper, they consider themselves "fit." One user bragged¹, "I'm a size smaller than A4. I'm A5."

如果他们能用一张A4纸盖住自己的腰，他们就会认为自己的身材很"完美"。一名用户还自夸道："我的腰比A4纸还小，我是A5腰。"

Luckily, some sane² Weibo users have put the trend under fire.

幸运的是，一些理智的用户并未盲目跟风。

Critics have posted photos holding the paper horizontally, putting it on small pets, or holding up oversize pieces of poster board instead. "So are they insinuating³ smaller is better?" one Twitter user wrote. "Not cool to offend the girls who don't measure up in this manner."

批评人士上传了一些照片作为讽刺：有水平放置A4纸的，还有用A4纸比量小宠物的，或者是用一张大海报来测量腰的。一位推友表示："他们是在暗示更细的腰更好吗？冒犯那些没有这么细的腰的女孩子们可不是一件多好的事情。"

While the average healthy waist measurement is 32.5 inches for women and 35 inches for men.

健康的平均腰围数据是：女性32.5英寸、男性35英寸。

Even some of history's most coveted⁴ bodies don't make the cut when an A4-size rectangle is put against their bodies to scale.

一些史上最迷人的身体甚至都没能满足A4腰的条件。

We nominated Gigi Hadid, Kim Kardashian, Marilyn Monroe, and Naomi Campbell to step up to the plate. With their diverse body types ranging from super curvy to thin and athletic⁵, very petite to statuesque, and with waistlines ranging from 22 to 26.5 inches, only Marilyn Monroe with her tiny 22-inch waist passed the A4 challenge.

我们选取了吉吉·哈迪德、金·卡戴珊、玛丽莲·梦露以及娜奥米·坎贝尔来进行这项测试。她们的身材类型不同，有的超级丰满，有的苗条，有的健美，有的均衡娇小。她们的腰围则从22英寸到26.5英寸不等。但是只有玛丽莲·梦露凭借她22英寸的细腰通过了A4腰的考验。