You can do cardio every day (as Mael said).
But it is suggested that change it up each day. From a 45 minute jog one day to a 15 minute sprint another day to a slow off-trail run on another, etc. As for your Martial Arts practice, there should be no trouble.
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"If you cannot lift the load off another's back, do not walk away. Try to lighten it."
~ Frank Tyger
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