What is used to hyperventilate the lungs?

Hyperventilation of the lungs is typically achieved through controlled breathing techniques, often involving rapid and deep inhalations and exhalations. This can be practiced in various situations, such as during certain medical assessments or in response to anxiety. Additionally, devices like bag-valve masks can assist in delivering breaths to a patient in a medical setting. It's important to note that intentional hyperventilation should be done cautiously, as it can lead to decreased carbon dioxide levels and potential complications.