EMST or Expiratory Muscle Strength Training is a technique used to improve respiratory muscle strength and endurance. There are various synonyms for the term EMST, including breathing exercises, respiratory muscle training, lung exercise, and lung rehab. These techniques are recommended for people who have lung conditions or have trouble breathing. Some of the exercises include diaphragmatic breathing, pursed-lip breathing, and abdominal breathing. These methods improve lung capacity, reduce shortness of breath, and increase the amount of oxygen that flows through the body. It is essential to incorporate these exercises into everyday routines to achieve better respiratory health and quality of life.