There are several factors that make the whole person feel light and fluffy: 1. When a cold first breaks out, the body is usually cleansed by bacteria, viruses, fungi and atypical pathogens that produce immune complexes of antigenic antibodies, because the involvement of immune complexes can lead to a serious reaction of the body to release inflammatory factors, such as leukotrienes, histamines and other inflammatory factors that can make the whole person feel light and fluffy. 2. The body is often affected by ionic disorders due to hyponatremia and hypokalemia, especially in the case of hypokalemia, the whole person feels weak, weak and light. 3. The above clinical symptoms may also occur in the presence of non-infectious inflammatory specific reactions, such as phytodysfunction, immune tissue disease, connective tissue disease. 4. The whole person will feel light and airy.