Raph's been dead on his feet for the last... well, he can't remember. He's barely aware as he clambers drunkenly through the open window and into the strange apartment. It's cozy and warm, which only makes him realize how cold his body's gotten compared to the room-temperature air.

All his previous worries about getting spotted venturing into "enemy territory" had been left behind with his brain function and awareness. When he stumbles into the living room, it's dark and there's a couch, so he wastes no time collapsing on it in a miserable, shivering heap without a word of protest.

Before he even realizes it, he's dead to the world, finally giving into sleep.