Ashtasthana Pareeksha is a traditional examination method focusing on eight specific aspects of a patient: pulse, urine, feces, tongue, voice, touch, eyes, and body dimensions. Diagnosing through Naadi Pareeksha requires experience, detecting bodily changes similar to musical strings, and specific observations such as waveform patterns reflecting health or illness states. Proper conditions and techniques for examination are emphasized, including patient positioning and timing for accurate results.