Hidayatullah, Muhammad A'raaf, Muchsin Doewes, and Sapta Kunta Purnama. “The Effect of Stretching Exercises on Flexibility for Students”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran 8, no. 1 (May 1, 2022): 118–130. Accessed December 24, 2024. https://ojs.unpkediri.ac.id/index.php/pjk/article/view/17742.