Next time you're in a perfectly quiet room, try this: press your palms tightly over your ears. That rushing, whooshing sound you hear isn't the ocean in a seashell or white noise—it's the actual sound of blood pumping through the vessels in and around your ears.

Your body is loud. Your heart beats, your lungs inflate, your joints creak, and your blood flows constantly through thousands of miles of blood vessels. You just don't notice because your brain is incredibly good at filtering out these internal sounds to focus on what's happening around you.

Why You Can Suddenly Hear Your Bloodstream

When you cover your ears tightly, you're doing two things. First, you're blocking external sounds that normally dominate your attention. Second, you're creating a sealed chamber that amplifies the sounds already present inside your head.

The rushing sound is primarily coming from pulsatile blood flow—the rhythmic surging of blood through arteries near your ear canal with each heartbeat. The carotid arteries in your neck and the smaller vessels around your inner ear are close enough to the ear canal that their sound vibrations can be detected.

It's Like a Built-In Stethoscope

Doctors use stethoscopes to amplify body sounds, but you've essentially got a DIY version. The pressure from your hands creates an acoustic seal, and the space between your palm and ear acts like a resonance chamber, making those internal sounds much more noticeable.

If you listen closely, you might notice the sound has a rhythmic quality that matches your pulse. That's your confirmation—you're literally hearing your heartbeat from the inside.

When This Sound Becomes a Problem

For most people, this is just a weird party trick. But some people hear this rushing sound all the time without covering their ears—a condition called pulsatile tinnitus.

Unlike regular tinnitus (a ringing or buzzing), pulsatile tinnitus has a rhythmic quality synced with your heartbeat. It can be caused by:

High blood pressure increasing the force of blood flow
Turbulent blood flow through narrowed vessels
Abnormal connections between arteries and veins
Increased awareness of normal sounds due to hearing loss

If you hear this sound constantly without covering your ears, it's worth mentioning to a doctor, as it can sometimes indicate underlying vascular conditions.

Other Sounds Your Body Makes

Blood flow isn't the only internal sound you can detect in the right conditions. In extreme silence—like in an anechoic chamber—people report hearing their own nervous system, the low hum of muscles tensing, and even the movement of fluid in their inner ear. Some people claim they can hear their eyes moving in their sockets, though this is debated.

The human body is essentially a noisy biological machine, and your brain works overtime to keep you from being distracted by your own internal soundtrack. But find the right quiet spot, cover your ears, and you get to hear the rushing river that's been flowing through you all along.

Related Tags