“Feeling sorry for yourself, and your present condition, is not only a waste of energy but the worst habit you could possibly have.” Dale Carnegie
"It is a shame for a man to grow old without seeing the beauty and strength of which his body is capable." Socrates
Let me let you in on a little secret. Just because the majority of people "breakdown" as they age DOES NOT mean it is normal. You do not all of a sudden just start breaking down, getting aches and pains, get fatter, lose muscle.
Raise your standards in order to become the person capable.