Alicja Bury, Patryk Biesaga, Konrad Kotte, Olaf Jadanowski, Kamil Łebek, Weronika Sobota, Przemysław Piskorz, Daria Litworska-Sójka, Bartosz Komsta and Julia Lipiec 2025. SUPPLEMENTING BOTH MUSCLES AND THE BRAIN: A LITERATURE REVIEW ON THE POTENTIAL OF CREATINE SUPPLEMENTATION IN COGNITIVE PERFORMANCE IN SELECTED DEMOGRAPHIC SUBGROUPS. International Journal of Innovative Technologies in Social Science. 2, 3(47) (Aug. 2025). DOI:https://doi.org/10.31435/ijitss.3(47).2025.3546.