Lose weight and keep it off** Substituting two main daily meals of an energy-restricted diet with meal replacements contributes to weight loss. Substituting one of the main daily meals of an energy-restricted diet with a meal replacement contributes to the maintenance of weight after weight loss.Go on, treat Yourself!SlimFast 3 2 1 Plan®Our tasty snacks are the perfect answer when you fancy a savoury hit and can help you lose weight and keep it off* as part of the SlimFast 3.2.1. Plan. Go on, tuck in and treat yourself!3 100Kcal SlimFast Snacks a day, or fruit & veg2 Tasty SlimFast meal bars or shakes1 600kcal healthy meal (800kcal for men)Drink at least 2 litres of waterGet active to help you reach your goalSlimFast meals are not designed to be your only food - add balanced meals, healthy snacks and drink plenty of water. Can only help weight loss as a part of a calorie-controlled varied diet and an active lifestyle.