Chapter VIII

The combination of mental and physical fatigue, as it is practised in many pursuits at this time, are exceedingly dangerous. Long journeys each day, to and from the sphere of profession or business, are hurtful. The idea that mental labour may be advantageously supplemented by violent muscular exercise, such as is implied in long and fatiguing walks or laborious exercise on horseback, is an error. Moderate and regular exercise, at the same time, favours mental work. The practical point is to regulate the physical labour that it shall not induce fatigue.