Historical research reveals that humans used to sleep in two distinct phases rather than a continuous 8-hour block. Around 400-500 years ago, people would have a 'first sleep' for a few hours, wake up in the middle of the night to perform tasks like praying or reading, and then have a 'second sleep' until sunrise. This pattern changed during the 18th and 19th centuries with the advent of artificial lighting and the Industrial Revolution, which normalized continuous sleep. Modern studies suggest that waking up in the middle of the night is still a natural biological tendency for many humans. https://otvkhabar.in/lifestyle/humans-once-slept-in-two-phases-nightly-before-modern-lifestyles-changed-natural-sleeping-patterns-completely-11869145 #creator program