"It may sound simplistic, but, a combination of Nutrient Potions and regular exercise can increase your natural lifespan by as much as 150 years! I know that is an unbelievable claim, but, I will prove it to you. Starting next class period, I will split the class in two, and will measure each of your current potential lifespan. Then, half of you will take one Nutrient Potion per day, and follow an exercise program I will give you, and the others will go on as normal. The last class before the Winter Holiday, I will again measure your potential lifetime, and I will give every person in this class 50 points for their house if the first group doesn't show a noted increase in their potential lifespan."