The heart beats faster during exercise because the body needs more oxygen-rich blood during activity or excitement, according to the Cleveland Clinic. Exercise typically causes the heart to beat to more than 100 beats per minute.
The increase in heart rate mainly depends on the body’s need for oxygen-rich blood, says the Cleveland Clinic. The heart normally beats around 50 to 99 times per minute at rest, while heart rate rises to well over 100 beats per minute due to exercise, emotions, fever and certain medications.
David Freeman explains on WebMD that regular aerobic exercise makes a person’s heart stronger and more efficient, allowing the heart to pump more blood every time it contracts. The heart needs fewer beats per minute to perform its job. Athletic training can lower the normal heart rate by 10 to 20 beats per minute.
During exercise, the main job of the heart is to deliver more blood to the muscles, states Dr. Craig Freudenrich on HowStuffWorks. The heart’s blood flow rises by around four or five times from that of its resting state by increasing the heart rate and amount of blood that enters through the heart and goes to the rest of the body. The heart rate increases three times the normal rate when the sympathetic nerves stimulate the heart to beat faster as a person begins to exercise.Learn More
Regular exercise reduces body fat, builds muscle, improves energy levels, and reduces the risk of developing many diseases, including heart disease and diabetes. To achieve these benefits, it is recommended to participate in some physical activity for 30 minutes per day.Full Answer >
While the normal resting heart rate is 60 to 80 beats per minute, according to the American Heart Association, heart rate during exercise is measured in relationship to the target heart rate, rather than to any average. Target heart rate depends on the age of the exerciser.Full Answer >
As soon as a person begins to exercise, the heart begins beating more rapidly in an effort to pump oxygen-containing blood to the muscles. In order to contract, which they must during exercise, muscles require more oxygen than they do when at rest. A person's heart rate continues to increase with more exertion until it reaches its maximum capacity.Full Answer >
The body needs more oxygen during exercise because the muscles need to produce more energy for the body to become more active, explains the Lung Institute of Western Australia. This is done by breaking down glucose from food.Full Answer >