Complex sentence: Steve Novella has written that the "evidence" for Heartmath is no more than fabrication constructed around electromagnetic noise registered by the devices used: "a tale woven from intertwining threads of pre-scientific superstition and some modern jargon and concepts".
Split into simpler sentences: Steve Novella has written that the evidence for Heartmath is no more than a fabrication, constructed around electromagnetic noise registered by the devices used. It's "a tale woven from intertwining threads of pre-scientific superstition and some modern jargon and concepts".