It’s something almost everyone has experienced — that sudden urge to get up and pee in the middle of the night. You drag yourself out of bed, half-asleep, thinking it’s harmless. But what most people don’t realize is that this simple habit can seriously disrupt your body’s natural rhythm — and even make your sleep problems worse.

Here’s why: when you get up during deep sleep, your body shifts from “rest mode” to “alert mode.” That movement, combined with exposure to light (even from your phone or bathroom bulb), signals your brain that it’s time to wake up. Your body starts releasing cortisol — the same hormone that keeps you awake during the day — and it becomes much harder to fall back asleep.

Doctors say that for most healthy adults, the urge to pee at night isn’t usually about a full bladder — it’s about habit. Once you start responding to that urge, your body learns to wake you up at the same time every night. In short, you train your brain to interrupt your sleep.

So what should you do instead? If you wake up and feel the urge, try to stay still, relax your breathing, and wait a few minutes. Often, the sensation fades and you can drift back to sleep without getting up. Avoid bright lights or screens, and limit fluids an hour or two before bed.

Over time, your body will adapt — and those restless 3 a.m. trips to the bathroom will stop. Your reward? Deeper, uninterrupted sleep that leaves you feeling more rested and alert the next morning.