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TIL the Power of Sleep particularly for elite athletes. Roger Federer sleeps 12 hours a day. Usain Bolt 9-10 hrs a day. Le Bron James also sleeps 12 hours. For a long time, while he was struggling with his form, Tiger Woods had a sleep disorder.

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9jA7 TIL that in 1910, Alice Stebbins Wells was sworn in as the first policewoman in the United States by the Los Angeles Police Department and was issued a standard badge. When she was accused of impersonating her husband, LAPD presented her with “Policewoman’s Badge Number One”.
doDd TIL in 1939, Major League pitcher, Bob Feller, tested the speed of his pitches by throwing them against a racing motorcycle before radar guns were invented.
QJyop TIL why we have two nostrils - different smells are detectable at different air speeds, so one nostril is always more open than the other to give us a wider olfactory range.
DQ7dj TIL There is an ancient Chinese notation for playing guqin zither. Each note is written in abbreviated Chinese characters, with symbols telling you which fingers, location on instrument, and plucking techniques to use
e8vD TIL the theme song for Futurama is based on the 1967 French electronic song “Psyché Rock.”