Well, Saturday morning since it was soooooo nice outside I decided to jog over to the field instead of run on the treadmill and I had to run on some cement for a little while on the way out and on the way back. I have not ran on cement for a long time. Do you think that could be it? It kind of makes since. Huh? Had not thought about that. I used to run outside all the time but I quess I was used to it. Now I am spoiled with the padding on the treadmill. Darn.... Can I work back into the cement thing or am I just too old?