Edwards, S, P Sherwood, N Naidoo, C Geils, K Van Heerden, J Thwala, D Davidson, and D Edwards. “Investigation into Breath Meditation: Phenomenological, Neurophysiologic, Psychotherapeutic and Sport Psychological Implications”. African Journal for Physical Activity and Health Sciences 19, no. 2 (June 19, 2013): 394–418. Accessed October 15, 2026. https://www.ajol.info/index.php/ajpherd/article/view/89832.