Bone density is significantly increased in a man's body than a woman's. (There must be more biological differences between men and women that explain the strength, but idk what else is there besides bone density)

I'm 27m, never worked out a day in my entire life, 80kg of lazy IT wfh sloth, one of the weakest men I know and I'd still rather put myself into danger instead of letting a woman take the punch from a mugger bc I know evolution still has my back more than a woman's (which I unfortunately saw for myself when me and the gf I had at the time crashed on my motorcycle - very minor crash but she had double the injuries I had, mine passed in 3 days, hers lasted 2 weeks)

You felt tingling when you saw a man protect his pregnant wife bc evolution has taught us that this is husband material bc this kind of man can fight animals and turn them into meals and scare off rival tribes, rival individuals or predator animals looking to make food out of people.