By don’t underestimate women, I do not mean it in the context of feminism and girl power. While females are generally regarded as weaker than males, and some are laughably weak compared to above average males, this does not mean they are harmless. Females have a good amount of lower body strength, and some of them aren’t very slow.
They also have fists made of hard bones, and that will always hurt when you strike someone in the face, which is composed mainly of soft tissues. It is important not to think females as harmless, because they can easily harm someone with their punches, just less likely than a male.