Blue governs the throat and the thyroid and plays an important role in speech and communication. It is a calming color, relaxing the mind, while increasing awareness. Aids against tension and stress and is cooling to the body's system. Blue may help in the treatment of asthma, stress, migraines, and high blood pressure. The presence of blue in your surroundings can stimulate learning and encourage new thought processes. The florescent lighting in classrooms is missing the blue spectrum of color, which can cause children to act out in their behavior. Therefore, blue is recommended for schoolchildren in order to keep them more focused and attentive.