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What happens if you play for 7 days without sleep? Day one: your eyes, neck, and back are already sore, your reactions are slower. Day two: mistakes, irritation, and a loss of understanding. Day three: extreme fatigue, headache, strange sensations. Day four: difficulty moving and concentrating, speech is slower. Day five: hand tremors, weakness, poor memory. Day six: your heart is unstable, your blood pressure fluctuates, and your body is almost completely exhausted. Day seven: your body can't t