The aging population study (part 4)

I came across a certain analogy from one of my class readings: aging is like a savings account. When we are young, we accumulate reserves in our body like a savings account. When we are ill and there is no "money" left, we draw from the reserves. As we get older, the amount of "money" that goes into our reserves may decrease. At a certain point in our lives, which may differ from person to person, we began to have not enough "money" to live our daily lives. This requires us to begin drawing "money" from our reserves, thus depleting it. When we reach a time where there is not enough "money" in either our reserves or our daily activity, we die. The learning objective in this analogy is that we need to build up our reserves throughout our lives in preparation for that golden age when we may need it and have enough to live a full and active life!