Scientifically Proven Plan* Effective Weight Loss SlimFast 3.2.1. Plan® It's simple, easy to stick to & scientifically proven to work* Pick 3 - Snacks a day. SlimFast Snacks or fruit & veg Choose 2 - SlimFast Meal replacements, shakes or bars Have 1 - Balanced 600kcal meal (800kcal for men) Drink - At least 2 litres of water a day Get Active! - Exercise could help you reach your goal