IMPORTANT question bout energy drinks????!

Question: i need to help a friend with her project and here's the question:

Which ingredient in an energy drink has the most effect on your heart rate?

please list a reliable source, i can help research it more.. thnx so much!

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Answers: i need to help a friend with her project and here's the question:

Which ingredient in an energy drink has the most effect on your heart rate?

please list a reliable source, i can help research it more.. thnx so much!

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Its The caffeine.

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its the antioxidants (vitamin C, vitamin A, vitamin E, and selenium). Caffeine is the main ingredient, but it does not effect the heart rate the most.

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