Major Source Of Energy in Vastushastra is Sun
Vastushastra is chiefly a scientific draft, but it is coated with religion mainly because in olden times religion was the main vehicle of communication, and as I told you earlier though in some cases the threats and promises of Vastushastra have been given is only to scare people into following Vastushastra. Vastushastra warns of diseases when particular tenets is not followed there are chances that you might fall sick, and my experience has shown that violation of some specific tenets can affect your health and if your comply to Vastushastra as much as you can, you can minimize health hiccups.
Major source of energy in Vastushastra is Sun. Sun is the source of all life on the planet and is also a silent killer. The effects of excessive exposure to sun radiation may not be evident until late in life. These effects may include a shorter life span and increase in developing of different type of diseases. The effect of radiation on human body depends on its intensity and this can be contained getting under a shelter i.e. a home.
One accepted example of effect of Sun on your health. Solar eclipse is certified harmful to pregnant women. Sunray direct and indirect i.e. reflected from moon also effect moods and emotions of a person. Interestingly crime incidence is higher during full moon and the word lunacy is derived from Lunar, which means moon. The Sun and moon have a strong bearing on our health. Only thing which can protect us to certain extend is our home and if designed as per Vastushastra. It can be quite protective.