She credits the 80/20 rule for her svelte physique, where she eats 80 per cent whole, nutrient-dense foods and leaves 20 per cent room for indulgences, within reason.
'Volume foods are foods that are lower in calories but higher in volume so you can actually eat more on your weight loss journey,' she said.
'Then it clicked that I could make these small adjustments to my meals - make them lower in calories and higher in protein - so I could make them work for me and my weight loss goals.'.
Brittany McCrystal, from New Zealand, led a sedentary lifestyle as a travel agent, working behind a desk, living off takeaway meals every day and enjoying alcohol.
'If you try and take shortcuts, I can guarantee you will end up at square one, just like I did many times when I tried weight loss shakes, pills, juice cleanses and keto,' she said.