Whether free fight is aimed at competition or at fight on the street, the student should make a great effort to improve his endurance (power of enduring). That is a reason that the student needs to have good basics and good skills of the fight of one step and of three steps; they develop the student's endurance. It will not happen immediately; usually two or three months are necessary in order to develop the endurance. The important part of it is proper breathing. The student has to breathe at the right time when he hits or he blocks. If he stops his breath when he does an action, he can still do the action, but he will become gradually tired as time passes. Finally he will lose his ability to continue. On the other hand, each time he breathes in and breathes out correctly, he extends the amount of time when he can continue to fight. 