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A member asked:
What makes heart rate increase during exercise besides epinephrine?
2 doctors weighed in across 2 answers
Normally your: Heart is slowed by the vagus nerve, removing the vagus effect increases your rate then the catecholamines take over for further increase
Answered 7/12/2014
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Many factors: humidity, altitude, oxygen tension, thermal are just a few examples. Dehydration as well as increasing the core body temp are very influential on raising your heart rate. How good your fitness level is also important.
Answered 10/19/2016
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