Everything from 60 to 80 is normal. 89 is slightly high but usually is not a cause for concern in medical terms. The site you mentioned is about sports and fitn

Everything from 60 to 80 is normal. 89 is slightly high but usually is not a cause for concern in medical terms. The site you mentioned is about sports and fitness. So, while 89 isn't exactly great in terms of fitness, taken by itself it doesn't point to a medical condition.