Mulyawan, Rizki, Yudik Prasetyo, Fatkurahman Arjuna, Sumaryanti, and Sigit Nugroho. 2021. “Fitness Level and the Relationship Between Heart Rate, Body Water, Dehydration Symptoms in Adolescents During a Pandemic”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran 7 (3):347-66. https://doi.org/10.29407/js_unpgri.v7i3.16586.