Answer:
2. a. Muscular system
3. Plenty of calcium - Good sources of calcium include dairy products, almonds, broccoli, kale, canned salmon with bones, sardines and soy products, such as tofu.
Pay attention to vitamin D - Your body needs vitamin D to absorb calcium. Good sources of vitamin D include oily fish, such as salmon, trout, whitefish and tuna. Additionally, mushrooms, eggs and fortified foods, such as milk and cereals, are good sources of vitamin D. Sunlight also contributes to the body's production of vitamin D.
Physical activity - Weight-bearing exercises, such as walking, jogging, and climbing stairs, can help you build strong bones and slow bone loss.
Avoid substance abuse - Don't smoke. If you are a woman, avoid drinking more than one alcoholic drink each day. If you are a man, avoid drinking more than two alcoholic drinks a day.
