How to Breathe-It’s Not as Easy as You Think! Your breathing should be steady, smooth, and controlled. While breathing, you should feel relaxed; you should not feel as if you are straining to get air into your lungs. Also known as respiration, breathing is a complex process, which involves several parts of the body, including the lungs, diaphragm, and intercostal muscles. Improper breathing could interfere with your body functions. Poor breathing habits could be messing up your nervous system, heart, digestion, brain, and muscles. Poor breathing could also compromise the quality of your sleep and have a negative impact on your mood. Breathing is usually an unconscious process, and most people rarely think about it. However, there are some ideal