The sun is a massive star in the center of the solar system and its most important advantage is that it is a source of life for all living things. Since the sun enables the human body to synthesize vitamin D, it plays a fundamental role in bone development, especially in children.

Sunlight contributes to the normalization of the hormonal functions of the brain. Sun rays accelerate the production of the hormone called serotonin, which is secreted in the brain and gives a feeling of happiness, vitality and fitness. The sun is life, energy, happiness. But in order to become its friend, one must get to know it.