Exercise is essentially important to the health of the infant. Its first exercise, of course, will be in the nurse’s arms. After a month or two, when it begins to sleep less during the day, it will delight to roll and kick about on the sofa: it will thus use its limbs freely; and this, with carrying out into the open air, is all the exercise it requires at this period. By and by, however, the child will make its first attempts to walk. Now it is important that none of the many plans which have been devised to teach a child to walk, should be adopted the go-cart, leading-strings, etc.; their tendency is mischievous; and flatness of the chest, confined lungs, distorted spine, and deformed legs, are so many evils which often originate in such practices. This is explained by the fact of the bones in infancy being comparatively soft and pliable, and if prematurely subjected by these contrivances to carry the weight of the body, they yield just like an elastic stick bending under a weight, and as a natural consequence become curved and distorted.  Read more...