Changes in air pressure and density can change the sound of your voice. Healthy vocal techniques can help you optimize the balance of voice and breath. In this clip, Jimmy Fallon, Lucy Liu and Kevin Delaney change their voices by breathing helium and sulfur hexa floride, making the air in their throats lighter and heavier. We do not recommend doing this yourself, but it's definitely fun to watch!
Learn more about voice techniques at Clearly Speaking.
Learn more about voice techniques at Clearly Speaking.