As you slow down you realize

Time goes by faster the older you get. When you are young, healthy, and full of energy you are so busy staying busy that you don't notice how fast time flies by. When you get older and you are forced to slow down you have time to notice that in what seems like a few months another year has gone by. That doesn't seem like something to worry about when you are young and you have your whole life ahead of you. When you get older you realize you have already lived for a long time and you notice how fast time is flying by.