Szymon Chmiela, Gabriela Kamińska, Natalia Bołtralik, Julia Dzięcioł, Zuzanna Banaś, Kinga Dzioba, Paulina Kisielewska, Weronika Dmoch, Julia Sawicka and Arkadiusz Moskwa 2025. RESTING HEART RATE AS A BIOMARKER OF BIOLOGICAL AGING: A REVIEW AND SYNTHESIS. International Journal of Innovative Technologies in Social Science. 5, 4(48) (Dec. 2025). DOI:https://doi.org/10.31435/ijitss.4(48).2025.4338.