Abedulsattar M, Hassan T. Study the performance of some physical and mental capacity for the day zero and embarrassment according to bio-rhythm. jope [Internet]. 2008 Sep. 28 [cited 2026 Jul. 7];20(3):184-99. Available from: https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/789