The cold in summer is due to the hot climate in summer, and the human body sweats more, and the secretion of sweat glands will consume a lot of energy. Second, the days are long and the nights are short in summer. The sultry weather often affects people's normal sleep and rest, resulting in insufficient sleep. Third, in summer, many people have poor appetite, mainly light food, which affects protein's intake. Because of the hot weather, some people don't want to exercise, which reduces the exercise time. These factors will reduce the body's resistance and increase the chance of getting infected with the virus, thus causing a cold.
Generally, it is necessary to strengthen exercise.
Drink more water and eat more fresh fruits rich in vitamins B and C.
Meanwhile, maintain personal hygiene. You can consult a professional if you have any questions.