I made it back into the house as fast as I could (which I'm sure you realize was not really all that fast) and sat in front of my space heater for the rest of the day. That's how that worked out. I'm a little worried that this weather is going to slow down my progress with the therapy...I have a hard time walking for 10-15 minutes in circles around the dining room...it's much easier outside...but if the weather keeps up the way it is (I hate Chicago) I'll have to come up with something else that works.