1 / Californian
Roast turkey, sliced cheese, avocado
Avocados contain oleic acid: a fat that boosts satiety levels, say University of California Irvine researchers. Eat it before bed to burn kilojoules overnight, and you’ll also get some of the sleep-inducing nutrient tryptophan.

2 / Italian
Pesto, Mozzarella, 
roasted peppers
Mozzarella packs in 220 
milligrams of calcium per 25 grams: a crucial mineral for weight loss and immunity, found the American Journal of Clinical Nutrition. Make this your 4pm snack.

3 / Swedish
Cream cheese, salmon, capers, lemon juice
Monounsaturated fats are essential for losing those centimetres around your middle due to their high impact on your resting metabolic rate. Salmon is loaded with the stuff, so tuck in at breakfast to burn fat all day.

4 / Deli
Boiled eggs mashed with mayonaisse, ham, pickle, black pepper
Egg fats lead to higher 
levels of the hormone PYY3-36, responsible for the full feeling that keeps your hand out of the chip packet. Enjoy as a post-gym recovery treat.