Max Pearl at The New Inquiryon "the health rave" and "Yoga Raves" -- which harness rave's expenditure-without-return and invest it as part of a regime of personal productivity:
"The health rave shifts the orientation of the party away from the wasteful pursuit of pleasure, the nihilistic accumulation of stimuli leading up to the inevitable crush of black, towards the constructive goal of making oneself a better person"
"In a cultural moment characterized by life-hacking and self-optimization, the logic of work has seeped into every facet of human life.... So what happens when the torrential force of the party is redirected towards the cause of health and self-improvement? When we don’t know how to waste time anymore, it may mean that work has already won."