Anecdotal evidence had suggested that high-impact activities, such as roller coaster riding or bungee jumping, could result in spontaneous passage of kidney stones, however 3D printing has now been used to validate the efficacy of a trip to Magic Mountain next time you suffer from kidney stones. A study was conducted at Michigan State University College of Osteopathic Medicine where Dr. David D. Wartinger performed research on whether roller coaster rides can actually facilitate kidney stone passage. A 3D replica of a patient’s kidney was printed in clear silicone material and then was monitored with ureteroscopy during a roller coaster ride. The results verified that roller coaster rides can assist kidney stone passage.