The intermittent or 5:2 diet involves having two ‘restricted’ days per week, on which you must limit your calorie intake to 600–800 kcal per day, with virtually no foods or drinks that ...

A diet regime that involves eating normally for five days out of a seven-day period and greatly restricting the amount of food eaten on the other two days is becoming popular by the name 5-2 diet.

Eager to get leaner and healthier but just not up for a diet that completely takes over your life? Good news: "There's an amazing alternative to traditional diets called a ‘5:2' style of eating.