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www.livestrong.com/article/357641-why-does-exercise-increase-the-pulse-rate

The primary function of the heart is to pump oxygenated blood throughout the human body as part of the circulatory system. When a person exercises, the heart rate, otherwise known as the pulse, will increase rapidly with the output of energy. Both the breathing rate and the pulse rate will substantially increase with exercise.

www.reference.com/health/pulse-rate-rise-after-exercise-c08ab0a8484828b6

The BBC points out that an increased pulse rate indicates the rate at which the heart is pumping and the arteries are expanding. During the recovery time after exercise, the pulse and breathing rates return to normal. A fit person or athlete experiences a smaller increase in pulse during exercise and a shorter recovery time afterwards.

www.newhealthadvisor.com/Why-Does-Heart-Rate-Increase-During-Exercise.html

Why Your Heart Rate Increases When You Exercise? ... Why Does Heart Rate Increase During Exercise? If you’ve ever wondered why your heart rate increases during exercise, then you should know that while you exercise, or carry out any vigorous physical activity, your muscles require a large amount of energy. ...

healthyliving.azcentral.com/exercise-make-heart-rate-up-7931.html

Other signals come from receptors in your muscles and joints that sense movement as you start exercising. The hypothalamus is a part of your brain that controls body temperature. When you exercise, your body temperature increases, causing the hypothalamus to signal the brainstem to further increase your heart rate.

www.scientificamerican.com/article/bring-science-home-heart-rate-excercise

If you did a more strenuous exercise—hula-hooping, for example—you may have seen a higher initial bump in your heart rate (such as reaching the middle of your target heart rate zone after just ...

www.livescience.com/3569-pre-exercise-heart-rate-spike-predicts-heart-attack...

Heart rate just before and during exercise and your chances of a ... Pre-Exercise Heart Rate Spike Predicts Heart Attack Risk. ... The men who had the highest increase in heart rate during this ...

livehealthy.chron.com/elevated-pulse-rate-hours-after-exercise-8188.html

Their pulse rates rise significantly during their exercise bouts and return to normal within a few minutes after a workout is over. Effect on Resting Pulse Rate How long your heart rate will remain elevated while weight training is determined by how much you lift, the number of repetitions you do and the amount of muscle you incorporate into ...

www.science-sparks.com/exercise-affect-heart-rate

Exercise increases the rate at which energy is needed from food, increasing the need for both food and oxygen by the body. This is why when we exercise both pulse/heart rate and breathing rate increase. Pulse rate is an indication of your heart rate as your arteries expand each time the ventricles pump blood out of the heart.

livewell.jillianmichaels.com/causes-heart-rate-increase-4477.html

In response to exercise, both aerobic and strength training, your heart rate increases. As the physiological demands of the activity increase, so too does heart rate. The heart beats faster during exercise to pump more blood to the working muscles.

www.healthtap.com/topics/my-heart-rate-will-not-go-up-during-exercise

Helpful, trusted answers from doctors: Dr. Ajluni on my heart rate will not go up during exercise: Under these circumstances the answe should be no until you feel better. Hr that goes up this much with standing implies dehydration--exercising right now will only make that worse. See your doctor and push fluids and nourishment. If still short of breath get an echo to make sure that the virus ...