...people are engaged in sedentary occupations than formerly. More nervous energy is required of men. Deprived of the natural assistance which physical...and overloaded with food poisons which brain work cannot burn up as physical exercise will, the arteries become brittle and weak and the heart muscle...

...diseases of degeneration are increasing, especially those involving the kidneys, heart, and blood-vessels, particularly among persons not employed at manual...natural channels, and overloaded with food poisons which brain-work cannot burn up as physical exercise will, the arteries become brittle and weak and the heart...

...physical and the increased mental work entailed by our complex social fabric. More people are^ngaged in sedentary occupations than formerly. More nervous...natural channels, and overloaded with food poisons which brain-work cannot burn up as physical exercise will, the arteries become brittle and weak and the heart...