Bonz,
It is difficult for any of us to admit, we just can't do what we used to as fast, my wife saw me laying down in the yard the other day after I shifted things around and had to bring me a glass of water and a nitro pill, so unfortunately, I know exactly what you are talking about, don't over do it and I will work on me not over doing, after a few years, I don't like to see those I now consider friends dropping off the map!
Take it easy guys, we all have a lot of life ahead of us and I know for one, I would sure hate to miss out on it!