One pistachio is around just three calories - compared to almonds which are roughly 14 calories each.
They are high in lutein, minerals and B vitamins - perfect for a nutritious start to your day.
Pistachios are also brimming with fibre which will keep you feeling fuller for longer.
Whats more, they have been proven to burn fat, according to a study published in the journal Nutrition.
The research saw one group adding pistachios to their diets; they ate 20 per cent of their total calories from the nut, which increased their protein and good fat intake and decreased their carbs (their diets contained 51 per cent carbs, 20 per cent protein and 29 per cent fat).
The control group, which consumed no pistachios, ate a diet that was 60 per cent carbs, 15 per cent protein, 25 per cent fat.
After six months, participants in the pistachio group had smaller waists (by approximately 0.7 inches).
They also saw their total cholesterol score drop by 15 points. They had better blood sugar numbers and had less harmful inflammation.
Furthermore, a 2015 study in the Journal of the American Heart Association also showed that people who snack on nuts may have lower abdominal fat than those who consume carb-based foods.
So while nuts - and especially pistachios - are a good addition to breakfast (although you shouldn't eat more that one to two handfuls a day) - what aren't good foods to consume in the morning?
Granola and breakfast bars should be eaten with caution.
They can be packed full of sugar and you could end up eating as many calories as if you sat down to a dessert.
Egg sandwiches also come with a word of warning. These often consist of a fried egg, ham and cheese on a toasted bagel or English muffin.
While such sarnies only have 300 to 400 calories, their macronutrients are highly unbalanced.
According to Livestrong, egg sandwiches have up to four times as much low-quality carbs as protein. This is because they are only made with one egg and therefore low in protein, which could lead to you snacking later in the day.
Other foods to avoid at breakfast include waffles, pancakes, bagels and muffins. These also do not contain enough protein and are rich in carbohydrates.
Orange juice is also a poor option for people wanting to lose weight.
The fruit juice is packed with sugar and, if shop-bought in a carton, low in nutrition.