60-70/80-90: Sounds as if the caffeine was doing OK. Was there a particular reason for stopping caffeine? There many items you could drink without concern. Please go online and find a few articles about resting heart rate. I think you will be more comfortable when you have reviewed that information.
Answered 3/14/2016
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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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