power after exertion. It is sometimes called "fainting;" but there is no loss of sense, and it is quickly relieved by liquid food. It is no uncommon thing to see a man in the ring or on the track come to a dead stop, though full of muscular power.
This is sometimes caused by loss of "wind" (to be explained hereafter); but much oftener it is the result of the complete overlooking of the nervous strength by a trainer who thinks of no force except that which he can handle and measure. "The power which is to drive the muscles as the power of steam drives an engine, is produced by the nerves—a fact much overlooked."
The effects of over-training and ignorant training are strikingly shown in the following remarks by a leading English medical journal, "The Lancet," on the condition of John C. Heenan, the American boxer, when he fought King for the championship of England, in December, 1863: