First, we need muscles to breath. How you ever thought about the strength of the muscles that allow you to breath? What effects the strength of the muscles used for breathing? The Journal of Cephaliga published an article in 2009 which detailed the effects of a head forward posture on the muscles used to breath. This articles shows that a head forward posture quickly causes the muscles that allow us to breath to weaken. As these muscles weaken, our ability to absorb oxygen decreases. Another mechanical influence on breathing is rib function. The classic medical physiology textbook, Guyten and Hall’s Medical Physiology, states that restriction in rib motion is the number one cause of low oxygen saturation. Is it logical that a head forward posture, with shoulders that are rounded forward, might affect how well your breath? Try it, push our head way forward, round your forward and try to take a deep breath. Now, sit up straight, pull your shoulder back, and take a deep breath. Notice a difference. Now let’s follow the progression. Let’s say we sit a lot during, and in the process, we develop a head forward posture. Because of this posture we develop stiffness between the shoulders and stiffness in the ribcage. These symptoms begin to cause weakness of breathing muscles, which we might notice as shortness of breath. A little back stiffness, a little shortness of breath, no big deal, right? At this stage, you would be showing some decrease in oxygen saturation in the blood stream. Your brain is registering this decrease in oxygen and adjusting to deal with this stress. How is it adjusting? Well, your body needs oxygen, if each heart beat carries less oxygen, we need to increase heart rate. At the same time, blood pressure will increase so that we can move that oxygen more efficiently. So, this mechanical issues of posture and rib function leads to poor oxygen usage, which leads to high blood pressure. This represents stress on the body. If you have ever suffered a time when you found it difficult to breath, you realize just how much stress this can cause. Well if this type of stress is being endured by the body all day, day after day, the body begins to become depleted of resource and fatigued. A fatigued heart, that is suffered for depleted nutrition sound like a perfect environment for heart disease. So, the next time you are considering a health condition, go one step further and examine why the condition is happening.