Second, for self-defense, this is hard to say. To tell the truth, if girls want to practice self-defense, their muscles should be similar to those of men, so they can defend themselves, but they are somewhat unsightly, and of course they are also divided into personal aesthetics. If you can't practice like that, to be honest, you can't achieve the effect of self-defense. Many skinny girls think it's cool to practice boxing. Actually, that's because we men always let them fight. If there is a real fight, we will be punched several times. And they don't feel anything, because they don't have the strength to hit our people. They all belong to me. It's okay to stand still and let you punch ten times. Unless you hit me in the crotch, I'll hit your rhythm with one punch. Of course, ordinary people and short and thin people are ok, but I'm afraid those who dare to play hooligans and find trouble are all good.