Singh, Anu, Sarika, and J. S. Sandhu. “Integrated Benefits of Combining Suryanamaskar Yoga With Ujjayi Pranayama on Heart Rate Variability and Resting Heart Rate”. New Visions in Medicine and Medical Science Vol. 2 (March 16, 2024): 168–183. Accessed June 24, 2026. https://stm.bookpi.org/NVMMS-V2/article/view/13839.