Curse the day!!!! The biggest thing is controling your urges,and your bodies needs...that is the biggest challenge is to take control of your body, and make it submit to you. The juice every hour helps. The first two days are the hardest, after that the hunger goes away, and you really don't wanna eat much. Alot of people are afraid if they don't eat they will fall over dead, but quite the contrary. Just make sure everything is goin with the lbb, and to fill the rest of your glass with water so you get your fluids!!!