Your target heart rate, which shows what your heart can withstand, decreases with age. To calculate your heart rate, subtract your age from 220. This is your maximum heart rate. Then multiply this number by 0.6. So, if you are 55 years of age, your maximum heart rate is 165 beats per minute and your target heart rate is 99.
In this example, if you are aiming to take regular exercise, you should aim for anywhere between 165 (your maximum heart rate) and 99 (your target heart rate). After three to five mintues’ exercise, check your pulse.
If it is greater than your target heart rate, ease up. If you are in poor condition, set a goal and gradually work towards your target heart rate. If your resting heart rate is more than 100, you are in poor condition. Try walking for 30 minutes a day to improve your resting heart rate.