Relaxation is shorthand for “limited environmental stimulation therapy.” The meditation procedure is connected to using water-stuffed sensory deprivation tanks, in which you float in darkish silence, faraway from external stimuli. Originally made in the 1950s by neuroscientist Dr. John C. Lilly to check consciousness and the consequences of sensory deprivation, https://www.bizmakersamerica.org/business-services/pause-studio-city