heart rate

General guidelines are given for the calculation of your maximum heart rate 220-age. So if you are 20, (220-20), you should be your maximum heart rate 200 beats per minute. These are general guidelines and the variety in this, do not worry if you slightly varied with heart rate monitor exercise and watch your maximum heart rate for the calculation. The calculation is a guide, not an absolute rule.
Target heart rate zone
Now you can know the maximum height of your heart, you can calculate the intensity of that what you want to work. Using the example of 20 years with a maximum heart rate 200bpm. You can exercise at 50-70 200, and 70 of the maximum heart rate can be the right way. This field can be configured to control the heart rhythm. It does not burn kilojoules at least, and probably not the easiest effect to lose weight, but that’s another debate.