Jesus said 'when you fast' not, 'if you fast'. Fasting is not talked about enough in the modern western church. It seems to have been neglected with other spiritual disciplines as optional, which is not what Jesus says. I have been a member of churches for my whole life, yet I cannot remember having any teaching on fasting whatsoever. I borrowed this from a friend. It is excellent. I'm going to buy my own copy. It talks about the basics of fasting, taking principles directly from scripture. Mahesh also shares the many personally-witnessed testimonies of the power God unleashed through prayer and fasting. He also talks frankly through the types of fast, how to break a fast, and what to bear in mind if you have healtg problems that would be affected by fasting etc. I think this is an essential for any Christian or 'little Christ' who wants to live as Jesus commanded us, especially those who, like me, don't feel they would know where to start.