The First House or Ascendant represents one's behaviour in the eyes of others, and also one's health. It corresponds to the way the individual acts in the world. It is the image of the personality seen by others and the person's visible behaviour expressed outwardly. The 1st House is in analogy with Aries and thus Mars too, and then the Sun. It is an angular house, the most important one with the Midheaven, maybe even more so due to its link with the body and health.