[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Hindu Medicine](https://indike.org/pramana/ins.science.zimmer-1948) › c8.126 # Hindu Medicine c8.126 Hindu Medicine c8.126 - **Language:** English ### [c8.126](https://indike.org/pramana/ins.science.zimmer-1948.c8.126) The tradition of Haṭha-yoga furnishes exact measurements of the various lengths of the protruding air-column of prāṇa during the various activities of the organism. Its normal extent is twelve fingers’ breadth (aṅgula: the twelfth part of a span or vitasti) ; in sleep, the outgoing breath extends sixteen fingers’ breadth; while eating, twenty; and while walking, twenty-four. In deep sleep its length increases to thirty, and during sexual intercourse, to thirty-six fingers’ breadth. - [Previous: c8.125](https://indike.org/pramana/ins.science.zimmer-1948.c8.125) - [Next: c8.127](https://indike.org/pramana/ins.science.zimmer-1948.c8.127) - [Up: c8](https://indike.org/pramana/ins.science.zimmer-1948.c8) --- Source: [https://indike.org/pramana/ins.science.zimmer-1948.c8.126](https://indike.org/pramana/ins.science.zimmer-1948.c8.126) · Pramāṇa