I did Kathy Smith's Functionally Fit Fat Burning workout today, slipping it in right after work. When I left work I felt groggy and headachey and all I really wanted to do was sleep. But I knew the workout would help. What I've learned is that exercise's greatest benefit for me is its mood-altering capacity. I have to keep reminding myself of this, of how it makes me feel. I've been doing Kathy's workout for a bit over a week now, getting back into it three days a week. I am beginning to find it a little bit easier to do with these knees. Her moves tend to be gentler but they still call on us to do squats and other things that I don't do well, may never do well or at all.