It's funny the things that remind you that you're aging. I went back to university at twenty-nine to get my engineering degree and that was a really in your face experience about being older. But since then life has really just moved along with a few more smile lines and few more gray hairs.
This past Saturday I took down the fence in the back yard, removed the rotting, poorly constructed retaining wall and moved some of the earth behind the retaining wall. Then I ate supper, cleaned the kitchen and put my daughter to bed. At eight thirty or so I went over to a friend's place and gamed until one o'clock the next morning. In my teens or twenties I wouldn't have thought twice about doing such a long day. Now in my almost forties I realize that it means I basically wrote off Sunday. I was a wreck, early mornings, a day of hard physical work and a late night just isn't as easy as it was ten to fifteen years ago.
The lines, the gray hair and beard, although a daily reminder of aging, is a gradual thing. It's attempting the feats of youth that really rub your nose in the mud.