You know that moment. Eyes snap open at 3:17 AM. Heart already racing before you're even fully awake. And then the thoughts start — the email you forgot to answer, your mom's test results, the thing you said at work three weeks ago that you're still replaying.
"My husband hits the pillow and he's out every single night. My neighbors joke about sleeping like babies. Meanwhile I'm lying there thinking — what is wrong with me?"
The answer isn't what you think. It's not stress. It's not age. It's not that you're a "light sleeper." There is a specific biological mechanism that fires at 3AM — and it was discovered over 70 years ago. The reason you've never heard of it is not because it doesn't work. It's because it works too well.