The summer solstice is June 2 1~22 of the Gregorian calendar every year. During the summer solstice, the sun shines directly on the Tropic of Cancer, which is the longest day in the northern hemisphere. Summer solstice is the season when the sun is at its peak.

Health care should conform to the characteristics of abundant yang in summer, pay attention to protecting yang, and focus on a "long" word. Summer solstice is connected with the heart, and sweating in summer is easy to relax the heart. Chinese medicine believes that sweat is the liquid of the heart, and a lot of sweating consumes the heart.