This medical education study investigates stress levels among undergraduate medical students during basic life support (BLS) training. It compares traditional face-to-face teaching session with virtual reality (VR) training simulating a resuscitation scenario in a public place. We will measure heart rate, heart rate variability, and self-reported stress to assess acute stress responses. The study also examines physical sensations related to VR, the realism of the virtual environment, and the suitability of VR for BLS training.