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Rh more and more of it—and then he will know that he is gradually but surely progressing toward the state of perfect physical health and great endurance.

When the tricks of combat that involve falls are tried, these should be done always on pads or mattresses—or, in the country, upon hay. While a grassy lawn may afford a good substitute, there is no reason for two friends, engaged in friendly contest, risking broken bones. It should be borne in mind, also, that in amicable tests too much strength should not be exerted. It is sufficient, at first, to learn the principles of jiu-jitsu combat. As the student progresses he will find himself able to endure more and more severe punishment, but arrival at this stage should never be rushed. Each student's own judgment will guide him in this matter.

The matter of costume is of great importance. The body should be as exposed as is possible. In the Japanese jiu-jitsu schools the students step out on the floor in nothing but breech-clouts. This gives the freest circulation of air around a body that is bound to perspire profusely from the rapidity with which the