If you want to maximize your time spent on exercising, a cardio heart rate monitor is a must. These devices help you measure your heart rate so you can adjust your workout accordingly. They can be used in conjunction with all kinds of vigorous exercise like walking, jogging, running, cycling, stair climbing and more. Cardiovascular activity is crucial not only for weight loss but also overall wellness.Linked to everything from stress relief to heart health, cardio is recommended on a regular basis for most people. Consult with your doctor before starting a new exercise program.