Well, they are naturally more competitive and active.They need to do everything in time and plus look beautiful and sexy - both for men and for women's rivals.Plus the maternal instinct when the female teaches everything. Including fighting.. I knew from childhood that women do everything one hundred percent. From cleaning to training. Anyone who has trained or wrestle with women knows that if she came to training, she will give her all. I'm not surprised about the theory about matriarchy and Amazons.