As I lost weight on my Tassie adventure cold nights really bothered my knees and the aching was costing me sleep. It was getting to be a problem. As I slogged along the horrid Port Davey Track headed for what I knew would be a cold night in the Western Arthurs I was ruminating on how to keep my knees warm (you know,multi-tasking !). After about five minutes of this what did I see lying between the mudholes and slumbering tiger snakes in the track but a single sock, and not just an ordinary sock, but a giant sock ! In a flash I knew my nights of cold knees were over.