Food Unwrapped is kicking off 2019 with a Diet Special which plays the long game for weight loss. Losing those Christmas pounds is a marathon, not a sprint. Kate Quilton is hitting the surf of Australia to find out if going vegan could be a clever way to cut the calories. Dr Helen Lawal follows a cross section of dieters as they take on the Nation's most popular eating plans over 8 months to reveal the reality of long term weight loss. Jimmy Doherty goes the distance to discover whether sports drinks are worth their salt for endurance training. And Matt Tebbutt goes dry for a month to see if ditching the booze can make him look younger ansd trimmer.