My body hates me

When you're in generally good overall shape, you feel like you can jump into any activity and be pretty much fine. When you're young, you can typically even get away with this. Well I think I must have somehow reached the age where this isn't possible because I feel like crap today. Saturday I participated in my yearly what-the-hell-I-shouldn't-be-able-to-do-this running event and tore it up with a 4:54 1600m on the track. I also drove about 210 miles on Saturday between that race and going down to work the club crit at the speedway. Sunday morning I rode about 2.5 hours in Nam with people better than me (oh wait, that's about everybody who owns a mountain bike). I then went home and spent way too long mowing my overly watered and healthy lawn. Sunday evening I had a softball game during which I had a picturesque slide into home while scoring from second and successfully tearing up most of my right shin and knee. This morning my shin stings, my wrist is very angry with me, and I generally feel like I let the kids beat me with hockey sticks (which they would enjoy greatly). I'm sure it will all wear off by lunchtime once I've been mentally flogged at work for a few hours...