I have been on slimfast shakes for 2 weeks now and i have put on 5lbs! Is this normal? I have one shake for breakfast, one for lunch and then a low calorie meal. If i snack in between which is rare then i will have fruit such as a pear or an orange. I do kick boxing once a week and exercise dvd at least twice a week. I'm really confused i've gone from 15 stone exactly to 15 stone 5lbs. Any advice welcome as maybe i'm not doing it right? It's really knocking my confidence.