There are a lot of differences between men and women. From their anatomies to the way that their brains are wired in order to think, there are going to be some differences. In most parts of the world, people are still living in a patriarchal society which means that they still think that women are the weaker sex.
In some places, there is more equality not only in terms of how men and women are respected but also with the type of jobs that they have. Physically, men will have a tendency to become more muscular as compared to women.
The hormones that men and women have will also be different. Men will have more testosterone while women will have more estrogen.