As for what you can eat when embarking on an 800-1,000 a day calorie consumption, the Fair 800 website has lots of delicious recipes. 

Green Brekkie Bowl 

The recipe serves one, takes four minutes to prepare and 15 minutes to cook. 

There are 343 calories per serving. 

Ingredients: 

Half a tbsp olive oil

Half a tsp ground paprika

Half a tsp ground cumin

Half a tsp ground turmeric

A quarter of a tsp chilli flakes

70g kale, hardy stems removed and leaves shredded

Half a courgette, (approximately 75g) chopped

Five baby mushrooms, sliced

50g raw spinach leaves

Two large free-range eggs

Vinegar

Half an avocado, mashed

Salt and pepper to season 

Source: Daily Express | Diet