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why does a heart rate decrease in the cold

A 30-year-old female asked:
Dr. Venkata Chilakapati
22 years experience Cardiology
Heart Rate: Shivering is a well-known response, but a less obvious reaction is heart rate increase. In cold weather, a faster heartbeat benefits muscular and resp ... Read More

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A 47-year-old member asked:
Dr. Michelle Zetoony
17 years experience Sleep Medicine
Lots of things: The major contributor to whether or not your heart rate will be up or down relates to sympathetic and parasympathetic hormones (adrenaline and noradre ... Read More
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8 thanks
A 45-year-old member asked:
Dr. William Wright
35 years experience Cardiology
Better shape: The harder you work the higher your heart rate. As a general rule, the better shape you are in, the lower your resting pulse. Unless you are on medica ... Read More
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3 thanks
A 38-year-old member asked:
Dr. Mary Callahan
28 years experience Cardiology
Decrease heart rate: If you want to lower your heart rate when exercising then simply lower the intensity of your workout. For example, if you are running then slow your ... Read More
A 48-year-old female asked:
Dr. Bennett Werner
43 years experience Cardiology
Several: Cardio-inhibitory form of vasodepressor reflex. Complete heart block as might occur during myocardial infarction, myotonic dystrophy, or lyme disease. ... Read More
A 43-year-old member asked:
Dr. Dan Fisher
26 years experience Internal Medicine
Decreased metabolism: Colder temps decrease hr through a variety of mechanisms. #1 decreased metabolism in the skin and extremities. #2 peripheral vasoconstriction reduce ... Read More
A 45-year-old male asked:
Dr. Calvin Weisberger
50 years experience Cardiology
Cold: When your body core temperature drops significantly, bradycardia(slow heart rate) usually occurs.
A 43-year-old member asked:
Dr. Daniel Weiss
33 years experience Cardiac Electrophysiology
Increases: If the hyerglycemia is no that severe not much. If it is and you start to g into diabetic ketoacidosos, it usually increases as a reaction to the othe ... Read More
A 30-year-old female asked:
Dr. Julan Crane
24 years experience Pediatrics
Cold: Do you mean cold as in upper respiratory infection? You can have a slightly elevated heart rate when you are ill but it should not be significantly fa ... Read More
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1 thank
A 44-year-old member asked:
Dr. Videh Mahajan
24 years experience Internal Medicine
Diabetes: There is no direct correlation, however, prolonged hyperglycemia can lead to diabetic coma which inturn can effect your heart rate.

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