The Valsalva maneuver is a breathing technique where you exhale forcefully against a closed airway, building pressure inside your chest and abdomen. It takes about 15 to 20 seconds and requires no equipment. People use it for everything from popping their ears on an airplane to stabilizing their spine during a heavy deadlift, and doctors use it to diagnose heart conditions and reset abnormal heart rhythms.
Basic Technique Step by Step
Sit down or lie on your back. Take a moderate breath in, not the deepest breath you can manage, but a comfortable full inhale. Close your mouth, pinch your nose shut, and bear down as if you’re trying to force a bowel movement. You should feel pressure building in your chest and abdomen. Hold that strain for 10 to 15 seconds, then release and breathe normally.
The key is that no air actually escapes. You’re pushing against a sealed airway, which raises the pressure inside your chest cavity. In a clinical setting, doctors measure this with a tube and pressure gauge, aiming for about 40 mmHg of sustained pressure. At home, you won’t have that measurement, but the effort should feel like moderate straining, not an all-out push that turns your face red and makes you dizzy.
What Happens Inside Your Body
The maneuver triggers a predictable chain of cardiovascular changes that unfold in four phases. When you first start straining, the compression squeezes the large artery in your chest, briefly raising blood pressure and slowing your heart rate. After a few seconds, the sustained pressure prevents blood from flowing back to your heart efficiently, so blood pressure drops and your heart rate speeds up to compensate.
When you stop straining and breathe normally again, blood pressure dips briefly as the compression releases. Then comes a rebound: blood rushes back into your heart, cardiac output surges, and blood pressure actually rises above its normal baseline for a moment while your heart rate slows back down. This entire cycle, from strain to recovery, is what makes the maneuver useful both as a diagnostic tool and a way to reset heart rhythm.
Clearing Ear Pressure
This is the version most people encounter first. When you’re on a plane during descent or diving underwater, the pressure outside your eardrum increases faster than the pressure behind it. The Valsalva maneuver forces air up through the tubes connecting your throat to your middle ear, equalizing the pressure and relieving that plugged, painful sensation.
For ear clearing specifically, the technique is gentler than the full medical version. Close your mouth, pinch your nostrils, and blow gently through your nose. You should feel or hear a soft pop in one or both ears. Don’t blow hard. Aggressive force can damage the eardrum or the delicate structures of the middle ear. If your ears don’t clear after two or three gentle attempts, try swallowing or yawning instead and wait a few minutes before trying again.
Resetting a Racing Heart
The Valsalva maneuver is a first-line treatment for supraventricular tachycardia (SVT), a type of abnormally fast heart rhythm that can come on suddenly and push your heart rate above 150 beats per minute. The pressure changes stimulate your vagus nerve, which acts as a brake on heart rate, and can sometimes snap the rhythm back to normal without medication.
A modified version improves the odds of success. You perform the standard strain for 15 seconds while sitting at a 45-degree angle, then immediately lie flat and have someone raise your legs to about a 45-degree angle for another 15 seconds. The leg elevation increases the rush of blood back to the heart during the rebound phase, making the vagal stimulation stronger. If you experience episodes of SVT, your cardiologist can walk you through this specific variation so you’re prepared if it happens at home.
Stabilizing Your Spine During Heavy Lifts
Powerlifters and strength athletes use the Valsalva maneuver to create a rigid, pressurized core during squats, deadlifts, and overhead presses. The increased pressure inside the abdomen and chest cavity stiffens the ribcage and stabilizes the lumbar spine, allowing the muscles along the spine and the abdominal wall to generate more force against a solid base. Research confirms that this increased abdominal pressure doesn’t reduce the compressive load on the spine so much as it increases overall trunk rigidity, which helps you handle heavier loads safely.
The lifting version differs slightly from the medical version. You take a deep breath into your belly (not your upper chest), brace your core as if bracing for a punch, close your glottis (the opening at the back of your throat), and hold that pressure throughout the hardest portion of the rep. You exhale in a controlled way as you complete the lift, not explosively all at once.
For trained lifters, the risks of this technique are very low because their cardiovascular systems have adapted to repeated bouts of elevated internal pressure. Beginners and people with high blood pressure should be more cautious. If you’re new to strength training, start with lighter loads and exercises like the bench press or seated row before attempting heavy squats or deadlifts with a full Valsalva brace. Untrained individuals who jump straight to heavy compound lifts generate spikes in chest and abdominal pressure that their bodies aren’t yet adapted to handle.
How Doctors Use It for Diagnosis
In a clinical exam, your doctor might ask you to perform the Valsalva maneuver while they listen to your heart with a stethoscope. Because the maneuver reduces the amount of blood filling your heart, it changes how certain heart murmurs sound, and those changes help identify the underlying condition.
Two conditions get louder during the strain phase: hypertrophic obstructive cardiomyopathy (a thickened heart muscle that partially blocks blood flow) and mitral valve prolapse (a valve that bulges backward). Most other murmurs, including those from aortic stenosis, mitral regurgitation, and tricuspid stenosis, get quieter. This simple distinction can point a cardiologist toward the right diagnosis without any imaging.
The maneuver also helps evaluate how well your autonomic nervous system is functioning. By tracking your heart rate and blood pressure through all four phases, doctors can assess whether the reflexive responses are intact. Abnormal patterns can signal nerve damage from conditions like diabetes or certain neurological disorders.
Who Should Avoid It
The maneuver is generally safe for healthy people, but it does create significant swings in blood pressure and internal pressure. People with uncontrolled high blood pressure face added risk because the rebound phase pushes blood pressure above its already elevated baseline. Those with blood vessel abnormalities in the brain or spine (cerebrovertebral anomalies) should avoid it as well, since the pressure spikes could stress weakened vessel walls.
If you have a retinal condition, glaucoma, or have had recent eye surgery, the increased pressure can strain delicate blood vessels in the eye. The same caution applies after abdominal surgery, hernia repair, or any procedure where internal pressure could stress a healing wound. And if you’ve been told you have an unstable heart condition or severe heart valve disease, the rapid changes in blood flow and heart rate could trigger complications.
Common Mistakes
The most frequent error is letting air leak out. If your lips aren’t sealed or your nose isn’t pinched, you’re just exhaling, not building pressure. You should feel your abdomen tighten and your face flush slightly. If neither happens, air is escaping somewhere.
Straining too hard is the opposite problem. People sometimes treat it like a maximum-effort push, which can cause lightheadedness, seeing spots, or even briefly passing out as blood pressure drops during the strain phase. The goal is moderate, sustained pressure, not an explosive burst. Aim for a level of effort you can comfortably hold for 15 seconds. If you feel faint or see stars, stop immediately and breathe normally. The sensation should be uncomfortable but controlled, not alarming.