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by lapetitejort 1361 days ago
I think it's more complicated based on the article:

> "...It’s a very specific movement that right now requires wearable technology and experience to optimize the health benefits.”

So it sounds like the performer may have to look at a graph to see that the right motion has been achieved? This video reinforces the notion: https://www.youtube.com/watch?v=yaK6TThRMdE