You wake at 3 a.m. again. Your heart pounds so hard you can feel it in your teeth. Your stomach churns, refusing the food you haven’t eaten. Your mind loops the same three seconds ... the door closing, the text that ended it, the silence that followed. Yesterday you forgot your keys, your lunch, the name of the person standing right in front of you. This isn't just sadness. This isn't you being dramatic. Your heartbreak is making you sick. Literally. And pretending otherwise is what's keeping you trapped in the body of the wounded. The Corpse Bride at the Cellular Level Here's the thing the love songs never mention: abandonment sends your biology into war mode. When attachment severs, the ancient mammalian brain reads it as a survival threat. Not as a metaphor. As "the pack has left me and I will die alone on the savannah." Your adrenal glands pump cortisol like they're trying to win a medal. Your immune system dials down, because in the predator-dense wilderness of your limbic system, you're too busy scanning for danger to fight off viruses. The body doesn't differentiate between the loss of a lover and the approach of a tiger.