Fasting is a good spiritual cleansing tool as it decreases production of serotonin in the enterochromaffin cells in the lining of the stomach and intestines. Serotonin is the neurotransmitter that blocks emotions from surfacing. About 95 % of the bodies serotonin is produced in these areas.
Thus with the emotional blocks removed, unresolved emotional wounds in the soul surface to be cleansed. Beware as it is often overwhelming for many and causes a psychological addiction to food (especially carbs)if the flood of emotions is overwhelming.
St. John Chrysostom: The Prophet of Charity
Benedict XVIs Nearly Unnoticed Letter on St. John Chrysostom (Fr. Z)
On Chrysostom's Social Doctrine
On St. John Chrysostom's Antioch Years
Synaxis of The Three Hierarchs: Basil the Great, Gregory the Theologian, & John Chrysostom, Jan.30
The Translation of the Relics of St. John Chrysostom (Jan 27 or Feb 9 Julian calendar)
The Easter Sermon of St. John Chrysostom (c. 400 AD)
The Life of Saint John Chrysostom
PASCHAL Homily of St John Chrysostom
The Golden Mouthed Preacher-St.John Chrysostom [Bishop,Doctor of Catholic and Orthodox Churches]