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TIL when you smile with your eyes it’s known as a Duchenne smile and genuinely smiling in this way i.e. the more muscles you use when you smile, the happier you will be whatever you are doing. (Last paragraph)

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EZbX TIL That J.R.R Tolkien fought in multiple battles during WWI. Including Battle of Thiepval Ridge and the assault on the Schwaben Redoubt.
o06W TIL that in South Korea, men who win Olympic medals do not have to participate in the two year long mandatory military service.
epML TIL rock pioneer of the 1950/60’s, Chuck Berry, still performs live today, at the age of 85
Bgryx TIL that Oklahoma City bomber Timothy McVeigh had originally selected TCBY Tower (now Simmons Bank Tower) in Little Rock, Arkansas, as a possible bombing location, but changed his plans due to a florist shop on the first floor of the tower.
GneG TIL April 11, 1954 was the most boring day in history.