This document discusses yoga practices for voice culture and development. It begins with an introduction on the importance of having a suitable voice for proper expression. It then covers anatomy and physiology of the vocal system, including the main anatomical structures (lungs, diaphragm, larynx) involved in voice production. Next, it discusses common causes of injury to the vocal cords like nodules, polyps, and laryngitis. It emphasizes the importance of vocal hygiene, proper breathing, and avoiding vocal abuse. The document recommends yoga and Sanskrit singing practices to train the voice and help develop clear speech and oration skills.