Gellisch and teammates report that “To examine the implications of the transition from face-to-face to online learning from a psychobiological perspective, this study investigated potential differences in physiological stress parameters of students engaged in online or face-to-face learning. . . . medical students . . . attended either regular face-to-face classes of the microscopic anatomy course or the same practical course online using Zoom videoconferencing platform. . . . A significant reduction in HRV [heart rate variability] was found in…