Which text describes over 30 postures and various cleansing techniques?

The Gheranda Samhita is a foundational text in the Hatha Yoga tradition, specifically designed to provide practical guidance on the practice of yoga. This text is significant because it details over 30 distinct postures, or asanas, and outlines various cleansing techniques, known as shatkarmas, which are intended to prepare the body for deeper yogic practices.

The Gheranda Samhita emphasizes the importance of physical purification and strength, along with the mental and spiritual aspects of yoga. The comprehensive nature of this text makes it a crucial resource for practitioners who want to understand both the physical and philosophical dimensions of yoga.

In contrast, other texts such as The Bhagavad Gita and The Yoga Sutras focus more on the philosophical and ethical frameworks of yoga rather than detail specific postures and physical practices. The Upanishads primarily explore philosophical concepts, metaphysics, and the nature of reality but do not provide the same systematic approach to physical exercise found in the Gheranda Samhita.