Small and/or weak boys or girls learn to defend themselves against larger and/or stronger boys or girls.
While not always the case, boys are thought to be stronger than girls.  Again, that’s not always true, but for the sake of this specific paragraph, we’re going to assume so.  Now with Judo, boys train with girls, girls train with boys.  In life, you don’t get to pick your bully or attacker.  So by treating all students as equals, whichever sex is weaker in the match learns to find the techniques and skill to beat the stronger.  It’s not about who is strongest or fastest – Judo is about being smart and capitalizing on the mistake of your opponent.  The winner of a Judo match is rarely the strongest, but usually the one who catches their adversaries mistake first.  Small and/or weak boys or girls learn to defend themselves against larger and/or stronger boys or girls.  And as I previously mentioned, a skilled child Judoka can even defend against an adult attacker, whether it be an attempted sexual assault or a kidnapper.  For these reasons alone, Judo is worthy of your consideration.