The healthiest fast food – what you should eat when you get hungry. With 1,042 kilocalories per serving, the Signature Avocado Burger is the highest-calorie product on the fast food market.
An adult man should consume around 2,500 calories per day to maintain a healthy diet. With 4-pack of chicken nuggets, the lowest calorie fast food is also available at McDonald's. With the healthiest breakfast, the course is already set for an energy-rich day.