To add insult to injury, I spontaneously snapped a small tendon in my left calf in February. While it didn't leave any major lasting problems, I now notice that I get pain in that calf after walking for a while, and my leg also tires more easily now.
The two bad legs have been playing off of each other, to the point where I know I need to exercise them to get the most out of them that I can. I have another entry in my diary regarding why I'm on the blood thinner - it's on private but I'll go open it up since there really isn't anything all that private in it. It's dated for May 21st, if you want to go back and look at that too.
Don't get the wrong idea though - I'm perhaps a little medically challenged, but I'm not in particularly bad shape, considering.