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Wolff’s Law- A case of use it or lose it.nnEver heard the expression “use it or lose it”? That pithy phrase encapsulates Wolff’s law, an anatomical rule that describes how bone grows and changes over time. The law was developed by German surgeon Julius Wolff.nnWolff’s Law states that in a healthy individual will adapt to the loads that their body is placed under. If the loading on a particular bone increases, the bone will remodel itself to be stronger in order to support that load.nnThe inverse (the “lose it”) of this law in true: as loading decreases, bone density will decrease and become weaker due to the lessened stimulus.nYou might think of your bones as not moving or changing much, especially once you’re done growing. But they’re more dynamic than you think. They adapt and change over the course of your life through a process called bone remodeling.nDuring bone remodeling, specialized bone cells called osteoclasts absorb old or damaged bone tissue, which includes things like calcium and collagen. After the osteoclasts finish their work, another type of cell called an osteoblast deposits new bone tissue where the old tissue once was.nnSo how does this play into weightlifting?nnWolff’s Law states that your bones will adapt based on the stress or demands placed on them. When you work your muscles, they put stress on your bones. In response, your bone tissue remodels and becomes stronger.nnThis is a proven law, not just a theory. For example, the bones in a tennis player’s dominant arm may be up to 20% thicker than the bones in their non-dominant arm. This is a living example of Wolff’s Law. It pronounces that our bones become thicker and stronger over time in order to resist forces that are placed on them. Our bones also will become thinner and weaker if there are no forces to fight against. So, if you are engaged in strength training, tennis, jogging, even walking outdoors… you are building up your bones.nnWeight bearing programs are essential for preventing weakening of bones later in life. A woman may lose up to 53% of her bone mass while men may lose up to 18% - all by the age of 80.n.nn.nn#wolffslaw #muscle #bonemass #nationalpersonaltraininginstitute...