Surprisingly high-caffeine food and drink that could affect your sleep

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For many of us, a morning caffeine fix is routine. Around 62% of Americans drink coffee daily

Coffee beans are a natural source of caffeine, a central nervous system stimulant,

The US health authorities suggest adults shouldn’t consume more than 400mg of caffeine per day 

As more can cause insomnia, anxiousness and an increased heart rate

We've rounded up the surprisingly high-caffeine food and drink beyond coffee.

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