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What causes a rise in heart rate before a big race?

In: Heart [Edit categories]

Answer:

the runner gets nervous and this causes adreline rush and this causes heart to rise

First answer by ID3498290042. Last edit by ID3498290042. Question popularity: 1 [recommend question].

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What causes heart rate to rise?
they heart pumps blood around the body .within that blood lies oxygen .when you excercise or get nervous your cells need more oxygen and water so your heart pumps faster your pulse determinds how...
Why does your heart rate rise when exercising?
The blood in your body must flow faster to bring oxygen to your muscles. To keep up with this rate, your heart needs to pump faster..
What causes and increased heart rate?
physical activity and emotional turbulence, eg, if you are scared, your heart rate increases, preparing to run, this come back yet again to, physical activity
What causes a fast heart rate?
exercise, drugs, excitement, health problems,
What things rise your heart rate?
You can do a LOT of things. Mostly, play sports, watch something scary, do something that makes you nervous, etc.