So much blue light...ouch.

Pretty gruesome stuff here, folks. Paper cuts. Back twinges from bending over keyboards and notepads. Hand cramps. Maybe even a headache from screen glare. Not for the faint of heart.

Happily, there is cheerful news that keeping your brain active can prevent "brain plaque," which everyone probably wants to avoid. And hey, if it works for crossword solvers, why not for the hardworking folks who crank out the puzzles in the first place? Go floss your brain.

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