What was damaged due to the slippery roads, though, was my back. Nothing serious, but enough to make it spasm randomly and make it difficult to sleep. I didn't fall, I just slipped and caught myself. A few different times. So I'm not sure which time did the damage, or if it was compounded at work. What I do know is the pain was starting to make it difficult to do anything, and even with tylenol and advil it just kept feeling worse. So I used heat (heating pads, nice hot bath... ) to relax all my muscles, then tried out a yoga video with stretches/strengthening for the back. Nice short videos, nothing strenuous. I've done them for 3 days in a row now... and I can already feel the difference! No spasms for most of the day, no intense pain. And increasing flexibility. Funny how it can take an injury to push someone to exercise! :D I plan to work my way up to doing the full 60 min video. But for now the 20min focused on the back and destressing has made a major difference. I like it!