Rating Newest Oldest. Best Answer: Normal is defined as a heart rate between 60 and 100 beats per minute. Less than 60 beats per minute is bradycardia (low heart rate), more than 100 beats per minute is tachycardia (rapid heart rate). A resting heart rate of 90 is on the high side of normal, but depends on many factors-firstly, how fit are you? Do you exercise regularly?