Have you taken the Bellybutton Challenge?

For those who aren't familiar with it, the Belly Button Challenge started on Weibo -- also known as Chinese Twitter -- and involved people rotating their shoulder and wrapping their arm around their torsos to see if they could touch their belly buttons. They posted their "successes" and "failures" on social media with the hashtag #bellybuttonchallenge. According to Buzzfeed, the challenge originated from an unknown study that claims women who can do it have "good" bodies and those who don't should lose weight.