Calcium plays a vital role in muscle function and bone health by aiding in muscle contraction and maintaining bone density. During muscle contraction, calcium ions are released, allowing muscle fibers to interact and shorten, leading to movement. Adequate calcium intake is essential for preventing conditions like osteoporosis and ensuring strong skeletal structure as individuals age. Dairy products, leafy greens, and fortified foods are excellent sources of calcium. Including these foods in the diet supports overall health, especially for active individuals or those engaged in weight-bearing activities crucial for maintaining bone strength.