Ruth Westoby is a researcher in South Asian Religions and a yoga practitioner. She is a Postdoctoral Research Fellow in Jaina Studies at the Oxford Centre for Hindu Studies, focusing on technologies of the body in Jainism and Yoga. As Affiliate Researcher at Inform, King’s College London and Associate Researcher at SOAS, University of London, Ruth researches asceticism and menstruation in yoga, tantra and neo-tantra. Her book project is Bloody Bodies: Stopping Menstruation in South Asian Religions. She teaches MA Yoga in the Modern World as Senior Teaching Fellow at SOAS. Her PhD from SOAS (2024), supervised by Prof. James Mallinson, explored The Body in Early Haṭha Yoga and was funded by CHASE-AHRC. She also collaborated with the SOAS Haṭha Yoga Project (2015-2020) interpreting early modern yoga postures, contributing to the emerging research methodology, ‘embodied philology’.