Sadhguru explains that a grain in its natural state is structurally composed of three components, which includes endosperm, germ, and bran. He states in the blog that the primary component of the endosperm is starch, which serves as the major energy supply for the germinating seed. The endosperm however, is relatively scarce when it comes to vitamins, minerals, fibre, or phytochemicals. The bran and germ in contrast, are rich in a majority of these nutrients including B vitamins, amino acids, phytochemicals, and minerals such as calcium, magnesium, potassium, sodium and iron. He also informs that before grains are commercially sold, they are often refined to improve texture and shelf life. Known as refined grains, these grains go through a process where the bran and the germ are separated and discarded, leaving only the starchy endosperm. The result is a grain from which most of the nutrients, minerals and dietary fibre have been lost.