What Actually Happens When You Don't Sleep for 3 Days

What happens to your brain and body if you don't sleep for 72 hours? In this video we go hour by hour through the effects of sleep deprivation: slower reactions, microsleeps, mood swings, memory problems, hallucinations, and how the brain recovers. We also look at two famous cases: radio host Peter Tripp, who stayed awake for 201 hours in 1959, and teenager Randy Gardner, who stayed awake for 11 days in 1964. ⏱ Chapters 0:00 What if you didn't sleep tonight? 0:32 Why sleep isn't "time off" 0:45 After one night 1:15 Microsleeps 1:34 Emotions and memory 2:10 Hallucinations 2:24 Peter Tripp (1959) 2:37 Randy Gardner (1964) 2:48 How the brain recovers ⚠️ This video is for education only and is not medical advice. Please don't try to stay awake for three days. If you're struggling to sleep, talk to a doctor. 💬 What's the longest you've ever stayed awake? Tell me in the comments. ▶️ Next video: why the sound of someone chewing can make you furious. Narration is AI-generated.