Viral infection causes fever (elevated body temperature), which increases heart rate because the body attempts to cool the core temperature through increased blood flow to the skin for sweating.
causalpending
Evidence Quote
“when you get sick particularly the viral infections one of the things that happens is that you get a fever and there's this rise in body temperature and so that rise in body temperature is going to cause your heart rate to rise because your body's going to want to cool down the core temperature and it does this by increasing blood flow to the skin for you to sweat”
Created: 8/13/2026, 10:26:22 AM
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