Proprioceptive neuromuscular facilitation is a common type of intervention to increase range of motion. The aim of this final paper is to investigate the possible mechanisms, proposed theories and physiological changes that occur following the technique of proprioceptive neuromuscular relief. The main goal of proprioceptive neuromuscular facilitations is to increase range of motion and performance. The use of the PNF concept technique on the segment in which the intervention is performed relatively quickly leads to the return of the range of motion and muscle strength, which restores the patient's functionality. The PNF concept looks at patients as a whole and seeks to harness the full potential of the patient while providing a variety of options by combining patterns and techniques with direct and indirect interventions of injured body parts. This makes the concepts a positive and holistic approach to the patient's problem, which requires a skilful interaction between the therapist and the patient, which aims to achieve the best possible results.