Milk contains calcium, which is good for bone growth, but drinking milk alone is not enough. The growth and development of bones need not only common nutrients such as protein, calcium and vitamins, but also other trace elements such as iron, zinc and selenium. The acquisition of these trace elements requires the intake of various vegetables and fruits. Try to avoid eating out-of-season and hormone-ripened foods and foods with high sugar content, because long-term consumption of such foods will lead to premature development of children and shorten the time for bone growth and development.

In addition, there should be moderate exercise and adequate sleep. When children in the growing period exercise for more than 30 minutes, growth hormone will increase significantly, which will promote bone growth. On the other hand, exercise itself will stretch joints and promote the growth of cartilage tissue. The hormone secreted by pituitary gland to promote human growth is the largest in sleep state, which is three times that in awake state.