Key Objectives of a Healthy Diet

The caloric content in the foods we consume provides our body with energy expressed in kilocalories (kcal). The basic unit of work, energy, and heat in the SI system is the joule (J). The amount of energy delivered is the most crucial factor influencing changes in our body weight. This follows from the first principle of thermodynamics, which is one of the fundamental laws of thermodynamics. According to this principle, the sum of energy delivered to the body must equal the sum of energy expended. This means that a reduction in our body weight is only possible if we consume fewer calories than we burn. Although the topic is much more complex, one cannot deny that the caloric content of the diet is one of the most important factors affecting our body weight.

The next important aspect is the total breakdown of macronutrients in the diet. This refers to protein, carbohydrates, and fats (BWT). This is important because each of these three elements has a different effect on how the body works. Adequate BWT proportions are important in the context of changes in the composition of our bodies. It is possible to have a calorie-deficient diet that causes weight loss, but an inadequate macronutrient distribution often leads to loss of active tissue rather than fat, resulting in poor results. The appropriate amount of protein for our needs is very important. Its amount depends largely on our daily physical activity. If a person is physically inactive, has a sedentary job, then the amount of protein, even when reducing, does not need to be increased and should be about 0.9-1 g/kg body weight. However, if a person is physically active, then the amount of protein in the diet should be greater than 0.9-1 g/kg, depending on the activity we undertake. According to current recommendations of the International Society of Sports Nutrition, protein intake should be 1.4-2.0 g/kg body weight per day, depending on the sport practiced. Why is protein so important? Protein facilitates regeneration after physical exertion, allows adaptation to exertion, provides a feeling of satiety, its insufficient amount in the diet can contribute to the use of intracellular protein for the body's energy needs. The proportion of carbohydrates and fats in the diet is a controversial issue, actually dependent on individual conditions. The Institute of Food and Nutrition recommends that fats provide 20-35%, and carbohydrates 45-65% of daily energy.

During a weight-loss diet (or any other type of diet), it is essential not to overlook the quality aspect of the food. Therefore, it is necessary to ensure the daily requirement for micro- and macro-elements which are essential for the proper functioning of the body. Most of these can be obtained from appropriate food products, but it is important to pay attention to their content during the reduction, due to the limitation of food consumption. Healthy weight loss is important for people who want to change their appearance.

After determining the calorie values, choosing macro components and healthy foods, it's worth considering when we should eat our meals. It's only now important to think about whether carbohydrates should be consumed in the morning or perhaps in the evening, and at what time after exercise. Should we eat three or five meals? These are in a sense secondary questions, as there's no point in paying attention to whether we're getting the right amount of protein at a certain time if we're not getting enough protein throughout the day. Additionally, it's important to note that the body best utilizes 20-40 g of protein that is provided every 3-4 hours. The number of meals we eat during the day depends on our lifestyle, the hours we wake up and go to bed. In general, we should ensure that we have our first bite within an hour of waking up and the last bite about 2-3 hours before going to bed.

Ingesting nutritional supplements is the least important of all the mentioned aspects, yet it has a significant impact on the achieved outcomes. Some argue that supplements contribute only around 5 percent to the efforts – someone even claims that it's 1 percent. These numbers are low, but many people admit experiencing a significant strength boost after using creatine alone. Only after ensuring the appropriate nutrition should one consider taking supplements.