Muscle Energy Technique (MET) is a manual therapy technique commonly used by massage therapists, physical therapists, and other healthcare professionals. It is designed to improve joint mobility, increase flexibility, and alleviate muscle tightness and pain. MET involves active muscle contractions and stretches in specific directions against a controlled resistance applied by the therapist. The client is actively participating in the technique, which makes it different from passive stretching or massage techniques where the therapist performs the movements.