Training update from a super-slow Dutch runner (me!): on Mon evening 8km in the dark (!). on Tue morning 20km in the rain, today 17km under hail showers! Dutch autumn. Also in the evenings I do some callisthenics.
As dark and cold prevail, I find sleep is super important for me. I have read that the body rejuvenates when asleep, and sleep prevents injury and helps muscle recovery. Merry dreams!