Andrea Nederveen, RMT - Registered Massage Therapist Diaphragmatic breathing is also known as ‘belly breathing’. This type of breathing focuses on the muscles in your diaphragm, the large muscle below the lungs, instead of just the chest and accessory muscles. You bring air into your lungs, expand your chest all the way into your belly. This is slow, methodical breathing as it takes time to deeply inhale the air in and then release it all again. Diaphragmatic breathing has so