That health is going to eventually deteriorate and if you do not take care of yourself then your health is going to deteriorate even faster, it is precisely because of it that we need to begin to take care of our health before it goes away, and while the effects are not going to be felt immediately once you become a senior citizen the differences between those that took care of themselves and those that didn't will be massive
Still I think I have time as even if I have not took care of myself as well as I should I am not in such a terrible shape either, it is just that some people have an incredible strong health while I have always being kind of sickly.