Instead of counting calories, we recommend a simple rule of thumb to help you develop a natural feeling for moderate and healthy portion sizes:

+ With every meal a palm-sized portion of protein-containing food (meat, eggs, dairy products, pulses, etc.) and a fist-sized portion of vegetables.

+ For most meals, a hollow handful of carbohydrates (pasta, rice, fruit) and a thumb-sized portion of fatty foods such as butter, oil and nuts.

These figures apply to women, men double the amount.

Of course, intermittent fasting can also be combined with other diets such as low-carb or ketogenic diets, i.e. carbohydrate-limited diets.