True, On the first day of sleep deprivation, your brain produces dopamine, which makes you feel energetic., By the second day without sleep, a person usually starts to look pale and ill with dark circles under their eyes., Hallucinations typically begin on the third day of being awake., The longest recorded time a person has stayed awake is 11 days (over 260 hours)., Chronic lack of sleep can lead to serious medical conditions like obesity and heart disease., According to the video, regular sleep deprivation can shorten your life expectancy., False, The prefrontal cortex becomes more active when you don't sleep to help you make better decisions., Two nights without sleep makes your immune system stronger against the flu., Scientists have a precise formula to calculate exactly when a person will die from exhaustion., It takes about a month of sleeping to recover from a long period of wakefulness..

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