An in-depth and up-close look at the ONE energy principle you need to know to take care of your health simply and naturally. What is the one thing you should know to have a lifetime of abundant health? Just as the sun rises in the east and sets in the west due to Earth's rotation, there are natural laws your body follows. One law, discerned by traditional Asian medicine, can decide the health of your body, mind, and spirit. Water Up Fire Down by New York Times bestselling author Ilchi Lee reveals this golden rule of health.