There are a few different heart rate zones, which can determine how hard your body is working when in a specific zone. First, check your resting heart rate. In order to do this you need to be relaxed and rested. Perhaps when you wake up in the morning or have been sitting in a chair for a few minutes with very little movement before hand. Once you feel relaxed and rested, use your index and middle fingers (don’t use your thumb for this) to lightly press on your wrist near the ulna side (thumb side) or on your neck against the carotid artery. Count your beats for 30 seconds then multiply your result by 2. That is your resting heart rate. A healthy heart rate is around 50 to 67 beats per minute. Trained athletes may have a slightly lower heart rate, which is even better. Your maximum heart rate is simply 220 minus your age. So if you are 30 years old, your maximum heart rate would be 190 beats per minute (BPM). During exercise, your target heart rate is 70% of your maximum heart rate. Now what are the zones between your resting heart rate and maximum heart rate, and why does it matter? All of which is listed in the chart above.