Before Thomas Edison invented the light bulb, people slept approximately 10 hours a night. Today, Americans sleep about 6.9 hours a night during weeknights and 7.5 hours each night on weekends.

Before Thomas Edison invented the light bulb, people slept approximately 10 hours a night. Today, Americans sleep about 6.9 hours a night during weeknights and 7.5 hours each night on weekends.

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