the Fishman hypothesis

The Fishman hypothesis suggests that a person's respiratory health, especially lung function, significantly impacts their ability to produce and maintain speech. Essentially, healthy lungs provide the necessary airflow and pressure for clear, strong speech, while compromised lung function can lead to softer, less controlled voice quality or speech difficulties. It underscores the close relationship between respiratory system strength and effective speech production, highlighting that respiratory health plays a crucial role in vocal performance and clarity.