Vastu is the bridge between man and nature. Everything is made up of basic five elements – FIRE, WATER, EARTH, SPACE, and AIR. All These elements are only found on earth that is why it is the only planet that supports life and nature. If the residential and commercial buildings are constructed without any regards to these elements then how would it will give any benefits? From each of the basic elements we are getting a strange precious gift due to infinite powers of the universe.

All materials in the world , irrespective of their size, shape , colour , physical or chemical compositions have embedded their origins from one of the Panchbhootas . They enjoy peculiar vibration levels, which is evading the intelligence of human beings.
The Vastu science is founded upon the laws of nature. The equilibrium we observe in the nature is easily perceivable by us in all moving bodies, but unfortunately we are unable to note this equilibrium in static bodies. The basic source of energy of the whole world is stored at North and South Pole. It flows uninterruptedly from North Pole to South Pole in the form of magnetic waves. Therefore Southward portion of every building should be higher than the northward portion so that there may not be any hindrance to the flow of magnetic waves.

Our ancient Vastu Shastra has been founded in such a way, that the inmates can derive maximum benefits from sun-rays and the energies of the sun like heat light, UV rays – the only reliable source of Vitamin D (Vitamin D is absorbed by the blood directly when the bare skin is exposed to sun), which is vital for sustenance of life on the Earth.
Uttaraayana and dakshinaayana too are of great scientific importance since daytime will be more than the nighttime in the Uttaraayana facilitating availability of more sun light.
The Eastern direction assumes a great significance because the sunrays of early morning emit more light and less heat, hence the best. In the afternoon, sun moving towards West, grow hot emitting Infrared rays, which are detrimental to health.
Thus, due to all these reasons, it is explicitly laid down in Vastu Shastra that more open space, more windows and doors fixed, more balconies and verandahas should be provided towards the East and the North side than in the South and the West side.

The most important aspect considered while formulating the Vastu Shastra is the magnetic field of the Earth, which has significant influence on the human life. Human body itself acts as a magnet with the head, the heaviest as North Pole. If the head is directed towards the North while sleeping, the North Pole of the Earth and that of the human body repel each other affecting the blood circulation, causing disturbed sleep, tension and other problems. Thus, it is said by Vastu Shastris that ONE SHOULD NOT SLEEP FACING HIS HEAD TOWARDS NORTH.