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In this as in so many other ways, Donald Trump serves as history’s alarm clock.

They set their alarm clocks for early morning workouts.

Jim agreed to the plan, only later to realize most of the prime items — a record player, radio, desk and alarm clock — were on his brother’s side of the room.

And when I didn’t reply he sent an alarm clock emoji and told me: 'Time’s running out.'

Opinions from sleep experts vary on the use of alarm clocks.