Diet represents a decisive factor in calories accumulation.

Be careful what you eat and how good is your food for an optimal body functioning:

• diets that contain plenty of natural products of plant origin - cereal, vegetables, fruits, are rich in fiber, which represent plant cell walls;

• diet which contains mainly of bread, meat and potatoes has decalcification effects;

• vegetables and fruits should represent 13-17% of total caloric need;

Lipids or fats, are an important nutrient in our daily needs.

First, they are an important source of energy. But in a weight loss program, fat consumption is a disadvantage.

Fats can have another positive roles in the body (not only an important source of energy), for example, they are sources of vitamins which can exist only in fat (A, D, E, K), but not only that.

Most fats can be produced in our body from proteins and carbohydrates, but there are essential fats, those who can not be produced in our body and therefore they should be provided from foods. Essential fats (the polyunsaturated fats) are found mostly in unrefined vegetable oils.

Protein are the first nutrients in our body, the main priority in our nutrition.

Proteins are found in many foods, in a higher or lower quantity. Most protein are included in meat, milky products, soy, beans, peas, eggs. For our nutrition, the best proteins are those containing essential amino acids.

Proteins are composed of several types of amino acids.

Some amino acids can be produced by our bodies, and others, called essential amino acids can not be produced by our body.

So, we have to eat proteins containing essential amino acids. They can be found in milky products and meat.

Eating or drinking something apart of water means calories.

Calories can be removed by workout and rarely by intellectual activity.

They are deposited as reserves under the skin or between internal organs, and fat is formed.

Today we are affected by the calories effects because we don't give much attention to healthy foods.

For example, the potatoes are very nourishing, but think about how we eat potatoes: usually french fries (1200 calories, from only a big potato) or with butter and cream.

Also green salads prepared with oil and various sauces have three times more calories than its would have without oils and sauces.

Carbohydrates are restricted in a weight loss diet.

They are composed mainly of carbon and hydrogen. For example, cereals and potatoes have many carbohydrates.

The most important carbohydrates are:

- glucose;

- fructose;

- sucrose (sugar);

- galactose (milk sugar);

- starches (carbohydrates in vegetables and grain);

- pectin;

- glycogen (muscle and liver).