Even though I understand that it may not sound pleasant, men are generally stronger than women due to biological differences related to the roles males and females play in nature. This is true for many animals as well, and there should be no shame in that.
In my view, women should not have to behave like men (unless necessary) to be considered strong. I wish people could recognize that being a mother and embracing femininity can also be seen as a strength, rather than a weakness.