Diaphragm is a thin, dome-shaped muscle located in the lower abdomen. It is the main muscle used in respiration and is responsible for controlling the volume of air that is inhaled and exhaled. Diaphragm contracts and relaxes in order to draw air in and out of the lungs. It is an essential part of the body’s respiratory system and plays an important role in breathing, as well as in maintaining core stability. This article will discuss the anatomy and physiology of the diaphragm, its role in respiration, and the conditions that can affect its function. Additionally, it will provide tips for strengthening the diaphragm and improving overall respiratory health.