The short answer is: yes, you will be hangry, but no, not all of the time. Although chances are you will be hangry or irritable, at least a little for the first few weeks, until you get used to the diet. But this subsides fairly quickly. Also, it’s worth remembering that studies have shown hunger doesn’t actually get worse over time. It does hit a peak, but then it starts to subside again. Once you get used to the new way of eating, you’ll come to look forward to fast days and the energy boost that they bring. Seriously!