Collisions are not the thing that makes football high impact. That comes from the stress the sport puts on joints.
Your bones connect to various joints in your body. There are three types: the fibrous, cartilaginous, and synovial joints . The latter two of these are relevant to training. Your cartilaginous joints are those found in your spine. As the name implies, they use cartilage to connect your joints, or in this case your vertebra, and provide partial mobility, allowing you to bend and twist your body into a number of positions. Synovial joints make up themajority of your joints and allow the greatest movement andmobility. Examples of these are your wrists, your shoulders, and your hips. Bones connecting these joints have a smooth tissue at the end called the articular cartilage. Synovial fluid is within the joint and acts as a lubricant. The articular cartilage and the
Low Impact Training
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