Hey Lee... Talk about being sore! I blew out my calf muscle the other day. I went for a run, and after logging a mile and a half, I decided to do "lines" on the basketball court. I got to 3/4, and felt a twinge in my calf. I've been like the walking wounded ever since. I sure hope that it doesn't curtail my kick boxing. I've been stretching and resting as much as possible. We'll see how it happens.