Reply To: Fasting Home › Forums › Decaffeinated Coffee › Fasting › Reply To: Fasting June 25, 2013 7:16 pm at 7:16 pm #961848 playtimeMember This fast (17 of Tammuz) is a very lenient one. Many people who get headaches etc. either fast until Chatzos (midday,)or don’t fast at all. Call your Rav.