Ouch. My bottom is sore. :)
This morning I went to donate blood - I do it every 4 months and afterwards I know I should probably take it easy for a day, but sometimes I don't listen ... usually nothing goes wrong.
So, this afternoon, 5 hours after donating blood, myself and Andy headed out the door onto the trail for a run. It was quite humid, but we were having a good time. After 2km Andy turned around because he was feeling a bit more tired than he thought he should. I still felt pretty good, so I carried on.
A km later I turned around - I only wanted to run at least 5km. With 800m to go, I suddenly felt a bit dizzy; I realised that if I didn't sit down right there and then, I'd probably fall over. So I sat down on the nearest patch of grass. As I sat, all dizziness disappeared and I jumped up quicker than I sat down. The adrenalin and shock was probably what made sure that I didn't faint at that stage. I had sat down on a nice little patch of thistles!
So with an itching and burning bum, I walked home as fast as I could, trying not to laugh, and at the same time not to cry or scream. Once home I got into a bath and a quick scrub later all felt well again.
All of this has taught me a valuable few lessons.
1. Don't go run on the day that you donate blood and
2. Watch where you sit down!

It doesn't seem all that long ago that I would pass out just from giving blood : exercise afterwards was out of the question. I'm used to it now, but still think I'd have to avoid training on the day... or at least use it as an excuse to slack off. ;-)
As for Thistles, I don't recall ever having the joy of sitting in them. I'll take another person's valuable lessons any time I can get them, though. Thanks for the heads up. :-)