Heart qi is a term in traditional Chinese medicine. According to the theory of channels and collaterals, the heart has a close relation with blood vessels and is the major force promoting the circulation of blood.

1. Summer is the season when all living creatures prosper. Heavenly qi goes down and earth qi goes up to meet each other. As a result, living creatures bloom and bear fruit.
2. People should go to bed late and get up early. Don't hate the long days and hot weather.
3. Be cheerful. Don't be angry.
4. Like the flowering of a bud, people should give off the yang qi inside their body.
5. This is why we nurture our qi to suit the long summer days. Otherwise, your heart qi will be harmed. You may contract malaria in autumn and
have your ability to suit autumn reduced. You may fall ill again in winter.
Learn more about the theory of Chinese medicine, please read Physiological Functions of Heart.