How do everyday technologies change our understanding of our own bodies? The pulse is a diagnostic tool common to many medical traditions, including Ayurveda, an ancient medicine of South Asia. In this episode, Professor Projit Mukharji tells us how the pulse has been understood by Ayurvedic practitioners (vaidyas) over time. He explains how pulse-taking changed when mechanical clocks, specifically the pocket watch and wristwatch, became a widespread technology in colonial India.