Hearing your breath: a new way to sharpen a Warfighter's mind?

This study looks at whether changing the sound of a person's breathing can help them feel less breathless and think more clearly when breathing is hard. Researchers will have 15 healthy adults breathe through a mask that makes it harder to breathe, while playing back their breathing sounds normally, softer, or louder. The goal is to see if changing what they hear can improve their focus and reduce the feeling of struggling for air.