Pursed lips, where the lips are pressed or drawn tightly together, most commonly signal tension, disapproval, or disagreement in body language. The expression can also refer to pursed-lip breathing, a medical technique used to manage lung conditions like COPD and asthma. Which meaning applies depends on context, but both are worth understanding.
Pursed Lips as Body Language
When someone purses their lips, they’re tightening and pulling them inward from all directions, creating a smaller, compressed shape. It looks similar to a kissing motion but drawn in more tightly. This expression reveals tension, frustration, disapproval, or anger. It’s essentially the face holding the mouth shut to keep someone from saying what they want to say.
Former FBI special agent Joe Navarro, a leading authority on nonverbal communication, has written extensively about lip behaviors as emotional signals. Under extreme stress, the lips may compress together so tightly they seem to disappear entirely. Navarro used these behaviors during interviews to identify which topics caused distress in subjects, suggesting they were touching on sensitive or uncomfortable territory. He’s careful to note that lip compression and disappearing lips are not, by themselves, signs of deception. They are reliable indicators of distress and tension, though.
Pursed lips also appear as a micro-expression, a fleeting facial movement that flashes across someone’s face before they can control it. These happen so quickly that most people miss them without training. When pursed lips appear as a micro-expression, the person is often evaluating their options or suppressing a reaction they don’t want to show.
Common Situations That Trigger Pursed Lips
- Disagreement: Someone hears a statement they disagree with but chooses not to voice it
- Frustration: A person is holding back irritation during a conversation
- Disapproval: The expression often appears when someone dislikes what they’re seeing or hearing
- Withholding information: The lips tighten as if physically preventing words from escaping
- Decision-making under pressure: People sometimes purse their lips while weighing difficult choices
Lip biting serves a related but slightly different purpose. While pursed lips hold back words or emotions, biting the lip is more of a self-soothing behavior. It helps relieve tension that may be minor and passing, acting as a physical release valve for stress.
The Muscle Behind the Movement
The pursing action is controlled by a ring-shaped muscle that encircles your mouth. This muscle pulls lip tissue inward and centrally, closing and protruding the lips. It’s the same muscle you use for whistling, kissing, drinking through a straw, and keeping food in your mouth while chewing. When you see someone’s lips tighten and draw inward, that muscle is contracting, and the degree of contraction reflects the intensity of whatever emotion is driving it.
Pursed-Lip Breathing as a Medical Technique
Outside of body language, “pursed lips” often refers to pursed-lip breathing, a specific breathing exercise used by people with lung conditions. It involves slowly inhaling through the nose and gently exhaling through lips that are shaped as if you’re about to blow out a candle. The technique is simple but surprisingly effective for people who struggle with shortness of breath.
Pursed-lip breathing helps people with asthma, COPD, and pulmonary fibrosis. It works by creating gentle back-pressure when you exhale. This pressure keeps the airways open longer than they would stay during a normal exhale, which allows stale, carbon dioxide-rich air to escape from the lungs more completely. With that old air cleared out, more fresh, oxygen-rich air can enter on the next breath. Over time, this reduces the effort it takes to breathe and relieves the sensation of breathlessness.
How to Practice Pursed-Lip Breathing
The standard technique follows a 1:2 ratio. Breathe in slowly through your nose for a count of 2, then breathe out through pursed lips for a count of 4 or more. The exhale should be gentle, not forced. Think of it as the pressure you’d use to softly blow on hot soup, not blow up a balloon.
The benefits are well documented. Pursed-lip breathing improves ventilation, releases trapped air from the lungs, slows your breathing rate, and promotes general relaxation. People with COPD often adopt this technique instinctively during flare-ups, and practicing it regularly can make it feel more natural when you need it most. It’s one of the first techniques respiratory therapists teach because it requires no equipment and can be done anywhere.
Telling the Difference in Context
If you noticed someone pursing their lips during a conversation or in a photo, you’re almost certainly looking at a body language signal. Pay attention to the timing. Pursed lips that appear right after you say something specific likely indicate disagreement or discomfort with that particular point. If the expression lingers, the person may be weighing whether to speak up or stay quiet.
If someone purses their lips while breathing, especially during physical activity or if they have a known lung condition, they’re using it as a breathing technique. The difference is easy to spot: body language pursing is brief and reactive, while medical pursed-lip breathing is rhythmic and deliberate, with visible slow exhales through a small opening in the lips.