Wear a kilt that you are less concerned about catching blood on it. If this martial-arts course of training is as serious as it should be, an accidental nosebleed via your sparring partners inability to avoid your nose will occur and you will bleed. Maybe your sparring opponent will bleed on you also.
It WILL happen if you are serious in your training. You will also become a better defender of your nose afterward.
Good luck.
Kick ***!

Ahhh ten ........hut
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KILT . . . .
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. . . ON.