If a 20-year-old woman wanted to calculate her target heart-rate range using 70-90 percent of her maximum heart rate,which of the following would represent her range?

A) 120-160 bpm
B) 130-180 bpm
C) 140-180 bpm
D) 160-190 bpm

Target Heart-rate

The optimal heart rate zone for maximizing cardiovascular benefits during exercise, usually a percentage of your maximum heart rate based on age.

Maximum Heart Rate

The highest number of heartbeats per minute during maximum physical exertion.