R. Efraim Eliezer was an influential rabbi in Philadelphia who enjoyed a close relationship with the Lubavitcher Rebbe, with whom he corresponded regularly. He would often pay a visit to the Rebbe in conjunction with Sukkot, Passover, and/or Shavuot, quoting the Talmudic passage, “One must greet his teacher during the holiday.”
Link: Getting Some Sleep
Look deeply and you will see that the Torah does not know of man and woman as separate beings.
Each act is performed once through a single body—a body that in our world may appear as two, but which the Torah sees as one.
On the contrary, for both to be assigned the same mitzvah would be redundant, for why should one half of the body do that which the other has already accomplished?
Just as a man fulfills the mitzvah to be fruitful and multiply through the agency of his female counterpart, so does a woman wrap tefillin or wear tzitzit on the body of her male counterpart.
For just as man and woman were first created as a single form, so too, before each soul descends below, they begin as one.
It may be at times that only half a soul must descend for its divine mission, while the other half waits patiently above. And when it will return, they will merge once again.