However, caffeine-free Diet Coke did just as well, suggesting that caffeine does not accelerate the reaction, at least at the normal levels in the drink. They also measured the pH of the Coke ...

"So I have a little bit of caffeine, Diet Coke in a glass ... Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from ...

But the school has maintained its caffeine-free soda offering for decades -- until now, after officials claim demand for the drinks have gone up. Students will no longer have to sneak in a jolt of ...

READ MORE: Diet Coke warning to anyone mixing drink ... After 40 minutes, the body has absorbed all of the caffeine from the Coke, which causes pupils to dilate and an increase in blood pressure.

Diet Coke has more caffeine than regular Coke. This can seem strange, but there's an important reason for the added boost ...