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TIL Your heartbeat changes and mimics the music you listen to

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wLdeY TIL when Katy Perry tried to buy a convent, the nuns who used to live there fiercely protested her bid and took her to court because they disapproved of her image so much. Tensions got so high that one of the nuns suddenly died in court, with her last words being: "Katy Perry. Please stop."
JY7y1 TIL Doggerland is the area of land connecting Great Britain to continental Europe. It was flooded by rising sea-levels (6500-6200 BC), turning Great Britain into an island.
y9Yl TIL Barter economies never existed. There’s no historical description of such a system—though there is evidence of gift economies.
P1ZbV TIL about Lynne Cox. The first person to swim between the United States and the Soviet Union (Bering Strait)
Z8Zn4 TIL according to OKCupid that women peak in physical attractiveness at the age of 21, while the same doesn't happen for a man until he reaches the age of 36; Furthermore, as women age, they prefer age-appropriate partners, while men retain interest in women as young as possible