+The best exercise that of which we are least conscious.+--It is the duty of every grown person as well as of every child to take time for recreation. Exercise taken in a systematic way for its own sake is a great deal better than nothing; and in crowded schools and in sedentary occupations such gymnastic exercises are the best thing that can be had. The best exercise, however, is not that which we get when we aim at it directly; but that which comes incidentally in connection with sport and recreation. A plunge into the river; a climb over the hills; a hunt through the woods; a skate on the pond; a wade in the trout brook; a ride on horseback; a sail on the lake; camping out in the forest;--these are the best ways to take exercise. For in these ways we have such a good time that we do not think about the exercise at all; and we put forth ten times the amount of exertion that we should if we were to stop and think how much exercise we proposed to take.
Next in value to these natural outdoor sports come the artificial games; baseball, football, hare and hounds, lawn tennis, croquet, and hockey. When neither natural nor artificial sports can be had, then the dumb-bells, the Indian clubs, and the foils become a necessity.
Everyone should become proficient in as many of these sports as possible. These are the resources from which the stores of vitality and energy must be supplied in youth, and replenished in later life.
+The value of superfluous energy.+--The person whose own life-forces are at their best cannot help flowing over in exuberant gladness to gladden all he meets. Herbert Spencer has set this forth so strongly in his Data of Ethics that I quote his words: "Bounding out of bed after an unbroken sleep, singing or whistling as he dresses, coming down with beaming face ready to laugh at the slightest provocation, the healthy man of high powers enters on the day's business not with repugnance but with gladness; and from hour to hour experiencing satisfaction from work effectually done, comes home with an abundant surplus of energy remaining for hours of relaxation. Full of vivacity, he is ever welcome. For his wife he has smiles and jocose speeches; for his children stories of fun and play; for his friends pleasant talk interspersed with the sallies of wit that come from buoyancy."