Sun is the giver of life, the illuminator, elevator of consciousness, one who enlightens, empowers and enlivens all beings, bestower of fortune, siddhis, gyana. While modern science had to wait for discovery of serotonin, its dependence on daylight and its role in wellbeing, satiety and longevity to acknowledge that there is no substitute for natural light, the vedic masters taught us the science of saiyam eons ago to enhance health, beauty, vigor and emotional stability. The practice of Surya Saiyam brings about such benefits, especially the production of the anti-ageing hormone serotonin, only as by-products of the practice. The boons which Surya Saiyam grants are incomprehensible.