You can’t sweat under a blanket when you have a cold and fever, but you should reduce your clothing at this time, which is more conducive to air circulation and heat evaporation, and also to the reduction of body temperature. If you have a fever, you may experience increased cold sensation and muscle tremors during the chills and chills stage, and you may have a high fever of 39℃ or more. Pay attention to measuring the body temperature, you can take oral antipyretic and analgesic drugs such as ibuprofen, nimesulide and acetaminophen to help reduce fever, and timely hydration.