Fernández Benítez, S.M. and Español, E. 2025. Impact of Physical Activity on the BMI of Second-Year High School Students: A Cross-Sectional Study. MENTOR revista de investigación educativa y deportiva . 4, 11 (May 2025), 449–465. DOI:https://doi.org/10.56200/mried.v4i11.9439.