Sleep is one of the most essential biological processes for human survival, influencing memory consolidation, emotional regulation, immune strength, metabolic balance, and even cardiovascular stability. Although it may appear passive from the outside, sleep is in fact a highly dynamic neurological event orchestrated by complex brain networks. Throughout the night, the brain cycles through structured [...]
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Here’s The Truth Behind This Scar On People’s Upper Left Arm
Smallpox, one of history’s most devastating viral infections, caused severe fever and an unmistakable skin rash. By the early 20th century, smallpox outbreaks wreaked havoc, with the virus claiming the lives of 3 out of every 10 infected individuals. Survivors often bore lifelong reminders of their struggle, with scars frequently etched into their faces. The [...]
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