2. Finally, protect the heart. During the last days, the summer heat is still the same, and it is easy to be sad and disturb the mind. People often show uneasy, uneasy and confused thoughts. Traditional Chinese medicine believes that emotional changes directly affect blood gas operation, and poor mood will increase the risk of cardiovascular and cerebrovascular diseases. In addition to paying attention to heatstroke prevention and cooling, we should also prevent irritability. Keep a peaceful mind.