It is also relatively accurate for adults to take their body temperature under the covers. The human body is covered with some clothing or bedding, which only serves the function of insulation and allows the heat to be released more slowly. The maximum temperature inside the clothing and bedding is equal to the body temperature, and no additional heat is generated due to the presence of these clothes, so the body temperature is relatively accurate. However, it should be noted that when taking the temperature should be wiped clean, otherwise the evaporation of sweat will take away the heat will affect the temperature reading. So should do a good job of prep work, the measured temperature is relatively accurate.