If you have a resting heart rate higher than 70 BPM you are at a higher risk for heart disease.
I believe it is Amy's, because you said Amy's target heart rate zone is 140bpm -- 186bpm. Thus, Amy's is higher
The normal potassium level in the blood is 3.5-5.0 milliEquivalents per liter (mEq/L). Potassium levels between 5.1 mEq/L to 6.0 mEq/L are considered to be mild hyperkalemia. Potassium levels of 6.1 mEq/L to 7.0 mEq/L are moderate hyperkalemia, and levels above 7 mEq/L reflect severe hyperkalemia.
