45-minute trail run/walk on packed snow today. I felt SLOW--not sure if it's because of doing less running lately or because running on snow is a little harder work than on bare dirt. Now I have to get ready for my very first night shift ever--clinical starts tonight and my placement this semester involves some nights, which I have never done before. Fortunately the hospital is just down the street, so I won't have to deal with traveling a long time when I'm tired at the end of the shift.