The second law of thermodynamics states that energy of all sorts, whether it be light, potential, chemical, kinetic, or whatever, tends to change itself spontaneously into a more dispersed, random, or less organized, form. This law is sometimes stated as entropy increases -- entropy being random, unavailable energy.
Vitamin D is a nutrient found in some foods that is needed for health and to maintain strong bones. It does so by helping the body absorb calcium (one of bone's main building blocks) from food and supplements. People who get too little vitamin D may develop soft, thin, and brittle bones, a condition known as rickets in children and osteomalacia in adults. Vitamin D is important to the body in many other ways as well. Muscles need it to move, for example, nerves need it to carry messages between the brain and every body part, and the immune system needs vitamin D to fight off invading bacteria and viruses.
This will indicate if you are getting enough vitamin D. This vitamin is crucial when it comes to activating your immune system. It helps to keep the âguardsâ of your immune system alert. Vitamin D is also important for bone and muscle health. All you need for this test is your thumb. Take your thumb and press it against your breastbone, which is your sternum. You can also press on your shinbone as an alternative.