An irregular pattern of heart beats is called an arrhythmia. Find out about different types of arrythmias, causes, diagnosis and treatments.

Newborns have a higher heart rate than adults. Some conditions in children may produce abnormal heart rates. Learn what a normal heart rate for kids is and about arrythmias or abnormal heart rates in children.

After a heart attack, a lower heart rate variability in depressed people might increase risk of death. Find out more about the connection here.

Smoking can increase your normal heart rate by a few beats per minute. This article has detailed info on the effects of smoking on your heart.

Think your job is killing you? You might be right: Job stress is linked to heart rate changes and cardiac risk.

Site has plenty of useful information on heart rates, including a handy chart of normal heart rates based on age that measures heart rates, calculates target heart rates and more.

Engaging and kid-friendly article does a great job explaining everything about the heart, including how the heart beats and how to measure your heart rate.

Interesting study links fetal heart rates to how a child's nervous system will develop through the toddler years.

Did you know the best time to measure your normal heart rate is a few minutes after you wake up? You can monitor your heart rate manually or with heart rate monitors.

What effect does aging have on the heart and the normal heart rate? Detailed article provides in-depth answers.

What makes your heart beat faster? Many factors, including fatigue, stress, heat and humidity, can affect your normal heart rate. Learn more here.

What is a good normal heart rate for women? Find out what your heart rate says about your fitness level.

Apart from your normal heart rate, what other heart rates should you monitor and why? Also includes a table of working heart rate ranges.

Lower resting heart rate has better outcomes among those with cardiovascular disease. A current study attempts to find out if a drug that only lowers the normal heart rate reduces risk of cardiovascular disease.