The main purpose of life in the Bahá'í Faith is to love and know God. They see their mission as to bring harmony and unity to the world. This is reflected in their spiritual practice.
Prayer, Meditation, and fasting are the main ways to achieve this.
In the Bahá'í Faith fasting is done so you can concentrate on oneself as a spiritual being and get closer to God.
The Nineteen Day Fast was designated by Bahá'u'lláh. It was a 19 day fasting period right before the New Year. It is done as preparation for the New Year.
The sick, elderly, and the very young are excempt from fasting.