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12 Surprising Sources of Caffeine

These 12 sources of caffeine, some hidden, some just plain weird, could be giving you the jitters.

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Decaf coffee

The name implies that this cup of java delivers all the taste you love without the caffeine, but don’t be fooled. In 2007, Consumer Reports tested 36 cups of decaffeinated coffee from six coffee standbys, including Starbucks and Dunkin’ Donuts. Compared to the caffeine found in a regular cup (generally around 100 milligrams), the decaf samples had less, but some packed in over 20.

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