Poor rest will not cause high body temperature, but poor rest will lead to a decrease in the body’s immune system, prone to bacterial or viral invasion, acute upper respiratory tract infections or infections of the urinary tract, digestive system and other systems, these infections will appear high body temperature. When taking a high temperature, it is also necessary to observe whether there are other clinical manifestations, such as sore throat, cough, low fever, weakness, abdominal pain, diarrhea, etc. Urinary tract infections can also present with frequent urination, urgency, painful urination, etc. Regardless of the cause of elevated body temperature, it is important to pay attention to good sleep and rest, and try not to overexert yourself to avoid a decline in immunity.