Understanding the Nasal Cycle

Why the fuck does only one of your nostrils work at a time? Turns out,

that's totally normal and it's called the nasal cycle. Your autonomic nervous system—the same

shit that controls your heartbeat and breathing—deliberately switches which nostril is dominant every

two to four hours. Here's how it works: erectile tissue in your nose, yeah,

like dick tissue, fills with blood and physically blocks one nostril while the other opens

up for business. One nostril does about seventy-five percent of the breathing while the other

one chills in rest mode. Then they fucking switch. This happens because

your sympathetic nervous system causes vasoconstriction in one nostril while your parasympathetic