Macabre Knowledge on Instagram: "When Abby and Brittany Hensel entered the world in 1990, doctors warned their family that survival would be unlikely — even hours were uncertain. But they didn’t just survive. They learned to walk. They learned to swim. They learned to drive — each controlling one side of the vehicle in perfect coordination. Two hearts. Two brains. Two personalities. One body. One life lived together. Growing up, people stared, whispered, took photos — but the twins grew stronger