I started doing it to lose weight. I lost 2lb per week for a period of 10 weeks. Since then I have continued doing it, but much less strictly. I don't eat breakfast and try to have a small lunch (like 2 pieces of toast), then I have a very large dinner at around 6pm. I honestly think I feel much better in the mornings, and I don't get sleepy in the afternoons. The way I started was to slowly push back the time I ate something at the start of the day. At first I didn't eat until mid morning, then after a few days I didn't eat until lunch time, then mid afternoon. After a week or so I was no eating anything until my evening meal.