That sinking feeling in the pit of your stomach. The urge to deprive yourself of food because you don't deserve it. The tightness in your neck and spine, unable to loosen. That jitteriness in your veins that won't dissipate. The disassociation between your eyes and brain, as if they're underwater. The longing for an unnatural, impractical early death out of exhaustion. That searing headache wrapped around the circumference of your skull. The simultaneous hollowness and nausea in your throat and below where your ears meet your jaw.