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An elevated heart and respiratory rate helps the body Êto gain Êsufficient oxygen and energy.Whereas, stimulating Êsweating Êbefore a race is important as it Êmake the sweat gland more Êactive.

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9y ago
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11y ago

Now that Jim is at full speed he has put new demands on his body which cause his heart rate to jump from 65bmp to 201bmp and his temperature has also rose to 99.5 but after two minutes of intense activity his heart rate is now at 180 and his temperature is at 100. Jim's body has slowed down and was giving 80% body effort while ignoring the pain.

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15y ago

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

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