Women need their own target heart rate for exercise because standard calculations are based on men-only research, according to Ohio State University Medical Center cardiologist Martha Gulat. She studied more than 5,400 healthy Chicago-area women and came up with a new maximum heart rate that takes 88% of a woman's age and subtracts it from 206.

http://yourlife.usatoday.com/health/...men/50501680/1