Group activites are always sinister and smack of communism, but these weird "work outs" to music really shit me up more than anything. I'd only ever seen them in documentaries about Japanese elementary schools from about 20 years ago (and the movie Battle Royale) and I assumed it was a bygone tradition, laughed at occasionally for being such a quaint and nonsensical memory.

Imagine my surprise when I was woken up by this...

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