caili
@caili
When I went to bed last night, I vaguely felt that I was going to catch a cold, but I was not sure. I woke up in the middle of the night and swallowed saliva and felt a sore throat. I was sure that I really had a cold. This cold really has no signs, suddenly, and there is no source of infection. Maybe it's because of my lack of sleep during this period of time, which is the reason for the decline of immunity.
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