The Diaphragm: Your Body’s Primary Breathing Muscle 🌬️ The diaphragm is a dome-shaped muscle that sits below the lungs, separating the thoracic cavity from the abdominal cavity. With each breath, the diaphragm contracts and flattens, creating a vacuum that pulls air into the lungs. This muscle plays a vital role not only in breathing but also in stabilizing the core. Fun fact: The diaphragm is also responsible for hiccups when it contracts involuntarily! Credit: SciePro #Diaphragm #Breathing #H