PT Laura Hoggins writes in her book, Lift Yourself: 'If you're wearing a calorie-tracker while you pound the treadmill, it may well tell you that you're burning more calories during that 30 minutes on the treadmill that when you do 30 minutes resistance training. That process needs energy and your body turns to its own fat supply to keep those muscles fed. When you lift heavy weights, you're breaking down the muscle - causing it to repair itself and get stronger. And weight training in particular is key when it comes to transforming body shape. While diet is crucial for losing body fat, you can't get away from the fact that exercise plays a huge role. All that means is that if you have your breakfast at 10am, you finish your last meal at 8pm. Dr Michael Mosley is the guy who came up with the 5:2 diet and he recommends setting yourself a 10-hour window - which is more generous than some IF programmes. By reducing your eating window, you're naturally going to consume fewer calories. So on top of using a tracker, you might want to try intermittent fasting. But if calorie reduction was really that easy, we'd already be doing it. A good way of keeping track is using a calorie tracker like MyFitnessPal, which will help you to set goals (1,500-1,650kcals a day should be manageable for a short space of time). The key to any kind of weight loss is in reducing your calorie load.

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