average beats per minute/while exercising
The easiest way to do this is to use a generic formula meant for the average person. For men, your maximum heart rate can be estimated by subtracting your age in years from 220. For example, a 20-year-old man would have a maximum heart rate of 200 beats per minute. For women, a newer standard is to take 88 percent of your age and subtract it from 206. Beats Per Minute in Exercise. The speed of your heart rate depends on the intensity of exercise that you wish to work at. The American Heart Association recommends exercising somewhere between 50 to 85 percent of your maximum. Beginners should start at the low end of this range and work up as fitness levels improve.