> The most common misconception by far, was that fat is converted to energy. The problem with this theory is that it violates the law of conservation of matter,

> The most common misconception by far, was that fat is converted to energy. The problem with this theory is that it violates the law of conservation of matter, which all chemical reactions obey. There is no "law of conservation of matter". Chemical reactions can and do release (or absorb) energy. What is conserved is mass, with the understanding that energy and mass are interconvertible (E = mc^2).