How to Lose Weight Well returns to screens tonight for a one-off spring special which sees the team help a group of ordinary Brits get summer-bod ready by testing out the latest food and fitness trends. Dr Xand Van Tulleken - who will be a familiar face to those who have watched BBC2's The Twinstitute series - shares the limelight with pediatrician Dr Helen Lawal as the try and coach a host of ordinary members of the British public into dropping some extra weight and staying healthy for longer. TV Chef and author Stacie Stewart joins Xand and Helen too, tackling the role your diet plays in keeping you healthy and explores how you can make your food healthier while Tonight sees Katy and Emily attempt to slim down for Katy's summer wedding in two weeks while Valenta and Praise go on six-week dieting plans to lose weight for an upcoming beach holiday. Elsewhere, Johnny and Joe want to slim down for a pool party in four months' time and Xand also investigates how to breathe and sleep your way to weight loss, testing the latest and greatest high-tech weight-loss gadgets along the way. Get Fit for Summer - Tuesday 8:00pm on Channel 4.