Among the fasting practices, there is the one on the integral fast of the first three days of Great Lent. This practice is not purely monastic as some like to state but also kept in the world. The principle is simple: it is a total abstention of food and drink until the presanctified liturgy of Wednesday. Then, after communion, it will be possible to eat and drink. Those willing, can continue after this, the integral fast to break it after the presanctified liturgy of Friday evening.
Some practical tips to have for such type of fasting coming from discussions:
- the first day of Lent is anyway normally a day of total fasting with no drink and food, on the eve think about drinking a lot
- the second day is the most difficult: people can have headache, feel tired
- the 3rd day is the easiest since the morning because you know it is over. Eating after such a long fasting can cause a small stomach ache because the digestion resumes
During this period, it is highly recommended to have some little physical activity in particular when you feel not very well; it can be walking a bit. Saying the services for Lent does help a lot (matins, vespers, complines), in particular with the 3 prescribed bows at each tropar of the canon of Saint Andrew.
For a person that never tried this, a two year process might help. On year one, allow yourself to drink on day 2.
Anyway, it is a interesting spiritual experience but also a very great human experience because you really understand what hunger really is.