CrossFit is all about constantly-varied, high-intensity movements. And to do these movements, you have to have a certified coach to take you through this - or any type of physical activity.
Anyone wishing to communicate with Americans should do so by e-mail, which has been specially invented for the purpose, involving neither physical proximity nor speech.
You have a physical human reaction to something that another human being made. When you remove the human from it, and you chop it up, make it all perfect, you have a different reaction. Something is not there. You can feel it when it's there.