A yellow face making a visible exhale with visible air dispelled near the open mouth. A sigh is a fundamental life-sustaining reflex, that helps to calm down in stress by regulating breathing. It's a strong subconscious sign used to express to others that you’re upset or anxious.
The Face Exhaling emoji can be used to represent breathing, 🧘 meditation, relief, calming down, or a need in a mental reset. It's also a sign of disappointment or displeasure.
This Breathing emoji can also be used with non-face emojis to describe a blow or "out of breath":