What is the reason for some exercises being performed reversed by men and women?

Some exercises are being performed reversed by men and women. Within some techniques, for example, the hands are being placed on top of each other on the lower belly. Doing so, men place the right hand on top of the left, while women place the left hand on top of the right hand. The reason for this lies in the different nature of both sexes and is related to the theory of Yin and Yang. Men represent Yang and women represent Yin. Furthermore the left side of men is Yang and the right side is Yin, whereas with women it is the other way round.