I spend maybe 6 hours a week doing kickboxing and bjj. Maybe 3-4 more hours if you include cardio I do on my own time.
gotta make sure you have time to recover physically, pushing beyond that only stunts gains and hurts your body. honestly it depends on the 13 year old kid.
If a law is unjust, a man is not only right to disobey it, he is obligated to do so. ~ Thomas Jefferson
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