The mineral crucial for strong bones and teeth is calcium. Calcium is essential for the development and maintenance of bone structure, influencing bone density and strength. Foods rich in calcium, such as dairy products, leafy greens, and fortified foods, help prevent conditions like osteoporosis. Additionally, vitamin D is important for calcium absorption, making the combination of both nutrients vital for optimal bone health. Together, they support physical activity by ensuring a strong skeletal system capable of withstanding stress and impact.