I didn't feel old at all until, that is, I got caught by a sudden hailstorm just as I'd parked the rental car I had driven and was still about 100 yards from the entrance to the office building I was headed into. I had not sprinted in ages. I never had to so I didn't bother. So I tried to sprint to the door to stay reasonably dry/unbruised.
Well, I had the most awful revelation in my life. Not only was I slow as molasses but I couldn't even move my legs as quickly as I knew I used to. I was completely shocked and amazed.
Of course, am some 20 lbs. heavier than when I think I weighed the last time I ran fast and hard... in a touch football game about 10 years ago but... OMFG! You don't know how crushing to your ego it is when your own body refuses to do what you know it used to do. I just about weeped.
And so now I am resolved to lose those 20 lbs, hopefully 30 and to work out. It's a great resolution. *rummages about desk* I know I kept it here somewhere......