Dr. Sebastian Cmentowski was a postdoctoral researcher at the HCI Games Group, University of Waterloo, Canada from July 2023 to November 2024. Funded through the Provost's Program for Interdisciplinary Postdoctoral Scholars, his work focused on using extended reality (XR) games to address one of the most urgent problems of our modern society: lacking physical activity. By leveraging the engaging nature of exergames, he worked on motivating users to incorporate physical exercise into their daily routines. His research efforts in this area tied into his broader mission to make XR applications more accessible and effective in tackling contemporary challenges.