The skeletal system consists of 206 bones that provide a framework for our body. It also provides protection for our vital organs as well as the framework for our muscles so that we can move through space. Because the asana practice is low-impact (and therefore less stressful on our joints) and weight bearing, it can provide a great mechanism for building strong bones which makes it a sustainable life practice. The skeleton gives us our shape which is generally genetic, it gives us our shoulder and hip width, leg and arm lengths. The body is constantly building up and breaking down bone tissue as required. Bones contain most of our body’s calcium supply. Our bodies need calcium and phosphorus to make healthy bones. It’s often thought that the bones make calcium, but they in fact don’t – they can only store it.
Different types of bones have various shapes. The shape of the bone tells a story about their particular function. Flat bones, like that of the cranium, sternum, scapula and ribs function to protect our internal organs. In addition, they can serve as larger areas of attachment for muscles which helps to generate stability in the practice. Long bones (i.e. femur, humerus, radius, tibia, etc) support our weight and help to facilitate movement. In the asana practice, these bones provide the leverage needed to take our bodies deeper into a pose. The short bones are cube-shaped and provide a weight bearing function and also aid in stability. The following diagram can assist you with a general base of knowledge for the primary bones of the body: