26/08/2026
Why Does Your Body Temperature Rise During a Fever?
During an infection, your immune system releases chemical messengers called pyrogens, which signal the brain’s hypothalamus to raise the body’s temperature set point. Your body then conserves and produces heat—causing chills, shivering, and increased metabolism. This higher temperature can make conditions less favorable for some microbes and support immune activity. Once the immune response lowers the set point again, your body releases heat through sweating and increased blood flow to the skin.
Viral Hashtags: