Since the beginning of the cooperation between the Chair of Preventive Pediatrics and the Department of Pediatric Hematology and Oncology at München Klinik Schwabing in 2016, exercise-related patient care has been steadily expanded and optimized. The COVID-19 pandemic posed particular challenges for the two sports scientists Sabine Kesting and Dominik Gaser who work at the department. The Münchner Wochenblatt (issue 47/2021) reported on the important role of the exercise program in the daily hospital routine during lockdown and isolation.