At this point, you're probably familiar with the #BellyButtonChallenge.



The trend, which originated late last week on Chinese Twitter-esque network Weibo, has generated upward of a hundred million social media posts in which people attempt to reach an arm back behind their waists and manage to touch their belly buttons.
The desired result — thought to be facilitated by the ideal of a thin waist — is supposedly an indicator of health, though no study backing this up has been identified.