Note 3 — Chapter III · EXERCISE AND EXERCISES.

“As certain as it is that a country walk through fine scenery is more invigorating than an equal number of steps up and down a hall, so certain is it that the muscular activity of a game, accompanied by the ordinary exhilaration, invigorates more than the same amount of muscular activity in the shape of gymnastics.”—Herbert Spencer, in Facts and Comments.