All of the following are recommendations to help prevent the onset of osteoporosis except: a. Avoid smoking cigarettes. b. Regular physical activity combined with an adequate calcium intake helps maximize bone density in children and adolescents. c. Eat the recommended amounts of calcium and vitamin D every day. d. Avoid consuming diets containing excessive amounts of protein, sodium, and caffeine. e. Restricting kcalorie intake repeatedly to maintain a low BMI is not a risk factor for developing osteoporosis.