Chest tightness is a pretty good reason to call the paramedics and get on a monitor right-freaking-now, and on to the ER. Even young folks die of heart-lung problems. Scheduling an appointment with the doc, followed by referral to the cardiologist, followed by a scheduling a stress test is a bit like finding that the couch is on fire and choosing to shop for a fire extinguisher rather than summon the firemen. Time is muscle. A stitch in time saves nine. The early bird gets the transvenous cardiac endarterectomy. Like that. There are too few active and coherent ETS players to risk losing any of you.