Neuroscientist Explains Why We Dream

Your body doesn't shut off when you die. It follows a precise sequence of events — and some of them are deeply unexplained. 💀 When the heart stops, the brain loses oxygenated blood within seconds. Consciousness disappears in 15-20 seconds. But the brain doesn't die instantly. Studies have recorded organized electrical activity continuing for up to 10 minutes after cardiac arrest. How is any brain activity possible without a heartbeat? Neurons have small emergency energy reserves that briefly su