There are days when you sweat in the middle of summer, and days when it gets cold in the morning and evening. At clinics in Kita-ku, Tokyo, the number of people complaining of poor health is increasing.

High and low pressure alternately pass near the Japan, and in the month from March 3 to April 26, 4 days with a difference of 25 degrees or more between the maximum and minimum temperatures were recorded in Tokyo. This cold temperature cycle is expected to continue at least until the first half of the long holidays.