PRINTED ON TREADMILLS and exercise bikes in gyms around the world is a simple method for estimating the maximum rate at which your heart should safely beat, in beats per minute: 220 minus your age. Yahoo: Is Your Resting Heart Rate Healthy for Your Age? What It Can Signal Is Your Resting Heart Rate Healthy for Your Age?

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What It Can Signal MSN: The True Age of Your Heart: How Your Heart Rate Changes Throughout Life (and What It Means for Your Health) The True Age of Your Heart: How Your Heart Rate Changes Throughout Life (and What It Means for Your Health) In TODAY.com's Expert Tip of the Day, a cardiologist explains why a lower resting heart rate can be a good sign of heart health and how to improve this vital sign. Resting heart rate — the number of ... Women's Health: Why Heart Rate Variability May Be The Single-Best Determinant Of Stress—And How To Track It, Per Experts Why Heart Rate Variability May Be The Single-Best Determinant Of Stress—And How To Track It, Per Experts