Lots of long walks in our freakishly warm November this week. I go out in a thin fleece, but after half an hour or so I'm OK just in a t-shirt. I've been doing 45 minute Vinyassa flows, 60 or 90 minute walks and then 45 minutes of yin yoga after the walk. It's working pretty well, but I'll probably start doing longer flows with more challenging asana when the weather gets colder. If fit ever gets colder...