Nourishing food is still necessary, but taken in much smaller quantities and more often, in order that the waning powers of the stomach may not be overtaxed.
Living on such principles, work can go on till the time for work is over, and the long sleep comes as quietly as to a tired child.

Simple common-sense and self-control will free one once for all from the fear, too often hanging over middle life, of a paralytic and helpless invalidism, or the long train of apoplectic symptoms often the portion even of middle life.
I omit detail as to the character and effects of tea, coffee, alcohol, &c, such details coming in the chapters on the chemistry of food..