At a satisfactory pace, no physical hindrances (though I turned my ankle a couple of times at uneven pavements, no lasting effect), but 5° in 100% humidity does get into your bones. I gave a penultimate once-over to an essay, and will begin once- or twice-overing another till the end of January, at which point I’ll send it in and then at last it’ll be all hermeneutics all the time (all the time that’s not owed to parish or teaching).