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www.reference.com/article/high-heart-rate-c820c903ace45086

A high heart rate, known as tachycardia, exists when a person's resting pulse exceeds 100 beats per minute, according to Mayo Clinic. The normal heart beat range for a healthy adult is between 60 and 100 beats per minute.

www.reference.com/article/causes-high-heart-rate-15cc945a977b8d88

The causes of a high heart rate include exercise, caffeine consumption, sudden stress, smoking and taking certain medications. In some cases, an elevated heart rate is a sign of heart disease, congenital heart abnormalities, electrolyte imbalances or drinking too much alcohol, reports Mayo Clinic.

www.reference.com/article/should-heart-rate-de185df773d1cf91

The normal resting heart beat for the average adult should range between 60 and 100 beats per minute, as stated by the American Heart Association. Trained athletes can have a lower resting heart rate that ranges between 40 to 60 beats per minute. There are many influencing factors that affect heart

www.reference.com/article/causes-fast-heart-rate-c5439dc09ae9a4e6

According to the American Heart Association, a heart rate of over 100 beats per minute is also referred to as tachycardia and occurs when the heart's electrical signals interfere with the sinoatrial node that is responsible for maintaining a balanced heart rate. Rapid heart rates can be triggered by

www.reference.com/article/heart-rate-f0e49c41670c7eb7

Calculate the heart rate by first finding the pulse at either the wrist or the neck. Then, count the number of beats in a 15-second period, and multiply that number by four to establish the overall heart rate, says Edward R. Laskowski, M.D.

www.reference.com/article/reasons-very-high-heart-rate-7f81155b8b55a135

An elevated heart rate above 100 beats per minute in adults is referred to as tachycardia, and its causes include anxiety, heavy alcohol consumption, heavy smoking, heart attack, sarcoidosis, some medications and some fevers, according to the American Heart Association. Treating the underlying condi

www.reference.com/article/cost-apple-watch-9dd3dc04de49d395

As of September 2015, the Apple Watch retails from $399 for a silver aluminum case watch with a white sport band to $17,000 for an 18-karat rose gold case watch with a rose gray modern buckle. The Apple Watch was released on April 24, 2015.

www.reference.com/article/calculate-variable-rates-f6e76f609759791

Variable interest rates are actually two rates added together. The first is a fixed rate called "margin" that is based on the credit worthiness of the borrower. The second rate varies and is tied to the movement of a specified index as stipulated in the loan contract.

www.reference.com/article/features-apple-watch-30d3985c9f852553

The Apple Watch features the ability to run a variety of iOS apps directly from the device, replicating many of the functions of iPhones and iPads. Users can make Apple Pay payments, send messages and make calls using the watch, and it also includes health and fitness tracking features.

www.reference.com/article/heart-rate-controlled-a9e689098b383203

The body controls the heart rate through its own electrical system that ensures blood flows through the heart and lungs in a controlled manner. Issues with the electrical system, such as an arrhythmia, can cause problems with a regular heart beat and how the body controls heart rate.