In daily life, it is important to ensure an adequate intake of calcium. For example, dairy products are a good source of calcium, with approximately 250-300 milligrams of calcium provided in every 250 milliliters of milk. Apart from calcium, vitamin D is also a nutrient that requires special attention. It is recommended to spend more time in the sun to help the body synthesize vitamin D. Alternatively, if you enjoy drinking milk, you can choose vitamin D fortified milk. In addition to increasing the intake of calcium and vitamin D, individuals can also spend more time outdoors to get sunlight exposure and engage in activities such as jogging and practicing tai chi.