You ain't no spring chicken no more, my man. You can't be dangling from a rope or bouncing around on a jet ski and expect to walk away without a few aches and pains. The trick is to convince yourself that you can still do everything you did when you were younger, you're just going to be a little lot more stiff and sore when you are done doing whatever it is you once could do pain-free. And can no longer do pain-free. $uck it up!
Welcome to life on the other side of 45. Middle age is a magical, blissful romp through the daisies of life.
Remember, George Blanda was still kicking field goals for the Raiders at age 48.