evidence: Alfarouk, K. O., Alhoufie, S. T. S., Hifny, A., Schwartz, L., Alqahtani, A. S., Ahmed, S. B. M., et al. (2021). Of mitochondrion and COVID-19. J. Enzyme Inhib. Med. Chem. 36 (1), 1258–1267. doi:10.1080/14756366.2021.1937144 [...] Piotrowicz, K., Gąsowski, J., Michel, J. P., and Veronese, N. (2021). Post-COVID-19 acute sarcopenia: Physiopathology and management. Aging Clin. Exp. Res. 33, 2887–2898. doi:10.1007/s40520-021-01942-8 [...] Jesús Rodríguez Huertas, University of Granada, SpainRicardo Marques, University of Coimbra, Portugal