A heart rate monitor is an excellent fitness tool, allowing you to work out within your chosen zone. Heart rate is simply the number of times your heart beats in a minute. It varies depending on what you're doing with your body at the moment (like exercising), your overall physical condition, genetics, and possibly your age. They also use it during exercise as an approximate measure of how many calories they're burning to meet a weight loss goal or maintain a certain weight level.
There are different types of heart rate monitors but all can be measured by a monitor; there are also different kinds of monitors such as basic, polar f6, f4, s725x, Reebok strapless, gaps and semi-pros monitors. Exercising the heart basically means that you can use your rate to guess or estimate the level of intensity of your workout at any given moment. You might also use it to judge how many calories you're probably burning while you exercise.
"Exercise rate" is simply your rate while you're exercising, or possibly a way of judging what level you've reached in your routine. Resting rate is basically your rate when you are at rest and not under stress. It tends to be lower for well-conditioned athletes and people who stay very physically fit. Target Rate is your goal rate for exercise training. It's a pre-determined number you try to reach during exercise maximum rate is the highest number of times per minute the heart is capable of beating safely. Pushing your heart beyond this number is inviting trouble.
