Marieke Heister is currently serving as a researcher at Radboudumc and as a group lesson instructor at TotalFit Ruurlo, specializing in ClubJoy Power classes. Possessing extensive experience as an occupational therapist and quality and safety advisor at Streekziekenhuis Koningin Beatrix, Marieke has also conducted literature research for Ergotherapie Nederland. Marieke's academic background includes a Master of Science in Clinical Health Sciences from Utrecht University, where a master thesis focused on the clinimetric properties of the CoCo-P in adults with Post COVID-19 Condition was completed. Previous roles range from support staff in facilities management to internships in pain rehabilitation and neurology, rounding out a robust professional trajectory in healthcare and rehabilitation.