Introduction. In the literature, nutrition is considered to be the basis for the energy supply in all the forms of physical activity. Energy needs depend on gender, age, body weight and possibly the type of the physical activity. Inadequate energy intake can lead to weight loss, fatigue, lack of concentration and no athletic performance. The constant physical activity involves the consumption of carbohydrates, useful for the formation and storage of muscle glycogen. The development of healthy eating and physical activity behaviors in childhood and adolescence are very important for adult life. That is why an early intervention can lead to healthy behaviors and it can prevent the occurrence of overweight and obesity.

Objectives. The purpose of this study was to demonstrate how important a controlled diet is correlated with regular physical activity, in the normal development of young people aged between 19 and 26 years.

Conclusions. The attitude is the one that should lead to a food program with a balanced diet that ensures good health, without increasing the percentage of fat, and to cause a weight loss for the young people who want to lose weight.