100 or so heart beats per minute?

I drank a monster energy drink, faster than usual though. Normally I spread 1 can out over 6 or so hours. But I drank this half way within 10 minutes the other half within 40 minutes. It's been like an hour since I finished it, but my heart rate is about 100bpm. is this normal, I just don't want to worry about having drank to much caffine too quickly.
100 or so heart beats per minute?
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