The Principle of Balance
“In the past, people practiced the Tao, the Way of Life. They understood the principle of balance as represented by the transformations of the energies of the universe. They formulated exercises to promote energy flow to harmonize themselves within the universe. They ate a balanced diet at regular times, arose and retired at regular hours, avoided over stressing their bodies and minds, and refrained from overindulgence of all kinds. They maintained well-being of body and mind; thus, it is not surprising that they lived over one hundred years.”
Maoshing Ni, The Yellow Emperor’s Classic of Medicine: A New Translation of the Neijing Suwen with Commentary