20 degrees? I had to walk over a mile to class yesterday with a wind chill of -15. Later in the afternoon when it was +1 I was out in my long sleeve shirt and shorts heading out for a run. It just takes some getting used to. The pain I have been dealing with for the past week has been right behind my knee, it started at the end of an indoor training ride. My knee has been reconstructed (ACL) but it's never given my problems until now. I've been stretching it out, but it seems to come back right at the end of my workout, not sure if maybe my form changes a little as I get tired or what is happening. I'm going to take a long weekend break and see if that doesn't get rid of it. Any suggestions??