Haritz Arrieta holds a BSc in Physical Activity and Sport Sciences from the University of the Basque Country (2013, UPV/EHU), and he completed his PhD on the effectiveness of an exercise intervention in older adults living in nursing homes (2019, UPV/EHU). He works as a Temporary Professor in the Department of Nursing II at the UPV/EHU. He also teaches physiology on the Nursing Grade and participates as a lecturer to master’s students in Biomedical Research as well as Healthy Ageing and Quality of Life. As a member of the Ageing On group, Dr. Arrieta’s research is focused on exercise interventions and frailty in older adults. Currently, he is participating in the Onko-frail Project, which aims to analyze the effectiveness of an exercise program to prevent functional decline and identify a panel of biomarkers associated with frailty in older adults with cancer.