Caffeine: All of the mentioned items EXCEPT for the rice contain caffeine, which raises the heart rate. This is the cause of your elevated heart rate! Many mysteries of life are resolved with science.
Answered 8/31/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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