Not exercising for a long time and suddenly exercising violently will affect people's resistance because of fatigue. Sneezing, stuffy nose, sore throat at night, phlegm, is a cold. I don't sneeze now, and I'm not afraid of the cold, but I still have phlegm and a sore throat. It's a cold complicated with respiratory infection. Treatment: Take some anti-inflammatory drugs if you are in a hurry. If you are not in a hurry, it will be fine in a few days, and you don't need to take supplements.