I.B. Mattiev. THE MAIN CONCEPTS OF THE RESEARCH - HEALTH IN A CATEGORICAL MEANING, HEALTHY LIFESTYLE, NEED FOR A HEALTHY LIFESTYLE. eijmr [Internet]. 2024 Jan. 11 [cited 2026 Mar. 23];11(01):49-54. Available from: https://www.eijmr.org/index.php/eijmr/article/view/913