MAIN-Diet (1) Now the summer holidays are here it can be tempting to go to drastic lengths to lose a few pounds before you hit the beach.

But before you bolt the fridge door shut – stop! Crash diets wreak havoc on our bodies and create mayhem for our metabolisms.

There is a way to lose up to 2lb overnight and up to 9lb in a week – safely and healthily on the aptly named Overnight Diet. And you can drink tasty chocolate smoothies, banana lattes and pina coladas while you’re doing it.

By dedicating just one day a week to having home-made smoothies while eating normal, balanced meals on the other six, your body will burn fat faster, helping you shed pounds in record time.

It will also boost your metabolism, stave off hunger pangs and provide a foolproof way to keep the weight off – long after your tan has faded.

The first day is called the Power-Up. For breakfast, lunch and dinner, you’ll drink delicious smoothies in place of solid food. The sweet-toothed will go mad for the Spa Crazy Chocolate smoothie, made with coconut milk, banana, and cocoa, while those who like it hot should check out the Delightfully Spicy smoothie which blends fresh pepper and avocado with orange and chilli.

The remaining six days are your Fuel-Up. Tuck into breakfast omelettes, fresh chicken salad for lunch and steak or roast pork in the evening.

Chicken Salad Sandwich Wrap

That’s a wrap: Chicken salad

Dr Caroline Apovian created the plan after years of research into the way we process food.

She says: “The plan combines intermittent fasting with a diet high in protein and full of fresh fruit and veg. The low-calorie smoothie day is called the Power-Up because it kick-starts your fat-burning process for the week.

“During the six-day Fuel-Up, protein helps you feel fuller for longer while helping you build muscle – which will boost your metabolism and help burn fat faster.

“This is the plan I guide patients through in my clinic and my experience shows that switching between the phases is the secret to losing weight fast and keep it coming off.

“Once you’ve reached your goal weight you can ditch the smoothie day or mix it – have one instead of breakfast one day, for example.

“The key to remember is that this is not a crash diet. If you stick to eating high-protein, leaner, healthier carbs and lots of fruit and veg you can make this a lifestyle – and you can still have small amounts of dairy and the occasional chocolate brownie.”

Start our seven-day sample meal plan on Monday and check out the range of smoothie recipes at the bottom of this article to get started.

See you on the beach!