How long humans could stay without sleep? #truestory #DidYouKnow #animation #scary #story #terror #mystery

This is a true story. In 1960, a US military research team began a classified experiment to test how long a human could survive without sleep. The subject was kept in complete isolation under constant surveillance, with no access to natural later time cues. By day three without sleep, the subject began showing signs of confusion, mumbling to himself, and forgetting basic information. On the fifth day, he began experiencing the full auditory hallucinations. He stopped eating and drinking and convinced that the food was poisoned by people he couldn't name. By the seventh day, he began to speak in a language that didn't exist, making up symbols and chanting them rhythmically. On day nine, he stood completely still for six hours, staring into the camera without blinking, and doctors debated stopping the experiment. Instead of stopping, they increased the stress by playing distorted audio and flashing lights to see what would happen. By day 11, the subject began screaming constantly for hours until his voice gave out. On day 12, he collapsed and stopped moving completely, peering lifeless. Medical staff rushed in, but when they touched him, he suddenly jolted up and violently attacked one of the doctors. After subduing him, they sedated the subject and ended the experiment permanently.