Started doing workout on the Asana Rebel app, which uses yoga to do strength training. They use yoga positions but do series of one pose over and over again to develop strength. I like it, but it's not what I expected.
classic xc skiing1:44:12  13.85 km (7:32 / km) +265m6:52 / km
Intervals with my juniors. Strength training in between 400m repeats. The track was icy, so it was really uncomfortable to run. I was pretty happy with my 400m times anyway. I skipped the last 400m because my back started to tense up. The slipperiness is really tough on the anterior muscle chain.