average normal body temperature Body temperature norms 98.6°F https://medlineplus.gov/ency/article/001982.htm almost exactly steady 37 degrees Celsius https://medlineplus.gov/ency/article/001982.htm medlineplus.gov/ency/article/001982.htm temperature Body temperature norms almost exactly body temperature Body temperature norms спектр U.S. National Library of Medicine: Body Temperature Normals body’s normal temperature Body temperature norms Body temperature norms 98.6 degrees Fahrenheit body temperature human body temperature is 98.6 degrees Fahrenheit https://medlineplus.gov/ency/article/001982.htm