Fifi Box lost weight primarily by adopting the New Atkins diet, which focuses on eating foods rich in protein and low in refined sugars and carbohydrates. She credited this diet with changing her relationship with food, especially reducing her addiction to sugar and carbs

. Her weight loss journey began after the birth of her first daughter in 2013, when she weighed 75kg and was motivated to improve her health and be a better role model. She lost about 15kg through this diet and lifestyle change

. In addition to the diet, Fifi made lifestyle changes such as cooking all her meals from scratch and exercising regularly-running, walking, cycling, and Pilates three to four times a week. Even when busy, she would fit in short 20-minute runs to stay active

. After her second daughter in 2019, she faced challenges losing baby weight but continued to work on her fitness and health, eventually maintaining a toned, fit physique

. In summary, Fifi Box’s weight loss was achieved through a combination of the New Atkins diet, regular exercise, and a commitment to healthier eating habits and lifestyle changes.