Which Lifestyle Changes May Prevent or Lessen the Amount of Weight

Which lifestyle changes may prevent or lessen the amount of weight gain that occurs with age?

A) exercising once a week
B) regularly getting a total of four hours of sleep at night
C) increasing portion sizes at home while decreasing portion sizes in restaurants
D) regularly exercising and getting eight hours of sleep at night
E) regularly exercising and decreasing the amount of sleep per night to under seven hours