I first gained in the first couple of weeks. I felt my body was in a re-hydration period,clinging to fluids it desperately needed. I also went through phases of exhaustion and couldn't make my morning workouts, I would just go on a 30 minute run which wasn't as effective. I haven't re-weighed myself but around week 3 I felt very de-puffed and balanced. Depending on how much and how often you drank, your body will need to adjust. Finally after week 4 I felt mentally ready to get more strict with my diet and exercise regime again. It just takes time for some people, and I can definitely understand the frustration.