In traditional Indian medicine and yoga, "nadis" are believed to be channels through which vital energy, or prana, flows in the body. There are said to be thousands of nadis, but three main ones are often highlighted: ida, pingala, and sushumna. These channels are thought to connect various energy centers, or chakras, facilitating physical, mental, and spiritual well-being. The concept of nadis is integral to practices like yoga and meditation, where practitioners aim to balance and harmonize energy flow. By focusing on the nadis, individuals seek to enhance their overall health and achieve a deeper state of consciousness.