Hidayatullah, Muhammad A'raaf, Muchsin Doewes, and Sapta Kunta Purnama. 2022. “The Effect of Stretching Exercises on Flexibility for Students”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran 8 (1):118-30. https://doi.org/10.29407/js_unpgri.v8i1.17742.