Miranda Kerr

She may be a model but Miranda Kerr has been looking in fantastic shape since giving birth to her son Flynn earlier this year. And she puts it down to healthy eating and practising yoga.

Health and fitness consultant James King says: "Yoga is not as effective as cardiovascular or resistance training for weight loss. However, it is a great way to detox and combat stress, which will certainly aid your weight loss programme - your body will resist burning fat when your mind is stressed; get your head right and your body will follow."

Miranda follows a 'metabolic typing' diet, which proposes we each have a unique metabolic type and that the nutrients appropriate for one may be inappropriate for another. A number of different metabolic typing diet plans are currently marketed despite the lack of scientific rigour behind the claims. Jame King suggests following principles to get your diet on track: eat within thirty minutes of waking, include protein with each meal, eat at least three meals a day, avoid eating carbohydrate with your evening meal and avoid any liquid calories.