Fever is an elevation of core body temperature; in medical terms, fever is a temperature over 38 °C (100.4 °F). Fever is involved in the body's immune response and most often occurs as a result of an infection. Participation in sports while the athlete is febrile is a controversial topic in sports medicine.

Regulation of Body Temperature

Normal body temperature is 37 °C (98.6 °F) when taken orally. However, variability exists between people, and temperature may fluctuate depending on the time of day, weather, exercise, menstrual cycle in women, and ...

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