What's Behind #MannequinChallenge?

If you're on social media, you've probably seen #MannequinChallenge. People are posting videos where they try to look like mannequins — frozen in time.

Two high school students in Jacksonville, Florida, posted the original #MannequinChallenge video last month, and since then everyone from the Cleveland Cavaliers to Paul McCartney have followed suit.

Here & Now's Robin Young speaks with Sarah Bellman (@sarahrbellman), an entertainment reporter who wrote about the challenge for Vice.